At 7 weeks pregnant you are in the first trimester, a little under 2 months along, with about 33 weeks to go, while your baby’s brain and face grow and tiredness and nausea often build.
Week 7 can feel like a lot for something you cannot see yet: bone-deep tiredness, waves of nausea, sore breasts, and a growing list of questions about what is normal.
This guide collects what major medical sources say about your baby’s development and size, symptoms and what helps, the first prenatal visit, sleep, and the warning signs that need a call. Where sources disagree, we print both.
Key Takeaways
At 7 weeks pregnant you are in the first trimester, about month 2, with about 33 weeks to go.
Mayo Clinic says the brain and face are growing, leg buds appear and the arm buds become paddle shaped.
UPMC says fatigue often peaks around weeks 7 or 8 and nausea is usually worst around week 9.
The CDC says all women capable of becoming pregnant should get 400 mcg of folic acid daily.
Severe pelvic pain with bleeding, fainting or shoulder pain need emergency care right away.
Table of Contents
7 Weeks Pregnant at a Glance
Quick Answer
At 7 weeks pregnant you are in the first trimester, a little under 2 months along, with about 33 weeks to go. Mayo Clinic says the baby’s brain and face are growing this week and leg buds appear. Cleveland Clinic puts the baby at about 0.5 to 1 inch long by the end of the second month.
7 weeks pregnant
What to know
Trimester
First. UPMC, using the American College of Obstetricians and Gynecologists (ACOG) definition, says it ends after 13 weeks and 6 days. Mayo Clinic’s guide calls the first 12 weeks the first trimester.
Month
About month 2, counting 4 weeks and a few days per month. Months are a convention, not a medical unit.
Weeks to go
About 33 (40 minus 7, counted from the first day of your last menstrual period).
Baby’s size
No week 7 figure on the primary sources we read. About 0.5 to 1 inch by the end of month 2 (Cleveland Clinic); about 1/2 inch, crown to rump, by the end of week 8 (Mayo Clinic).
Book your first prenatal visit and take folic acid every day.
7 weeks pregnant: quick facts.
How the weeks are counted. Mayo Clinic explains that your due date is found by counting ahead 40 weeks from the start of your last period, and labels week 7 as five weeks after conception. Cleveland Clinic says this gestational age runs about two weeks ahead of when conception actually happens. UPMC says the first ultrasound measures the baby’s size and confirms the due date, so go by your provider’s dates if they differ from your own count.
7 weeks pregnant in months. Seven weeks is 49 days, a little more than one and a half calendar months. Cleveland Clinic’s guide, which uses four-week months, places weeks 5 through 8 in month 2.
Your Baby’s Development at 7 Weeks
This is the embryonic period, when the basic structures of the body are laid down. No source can say what your own baby is doing on a given day, so here is what each reference dates to week 7 and nearby weeks.
Source and timing
What it says is happening
Mayo Clinic, week 7
The brain and face are growing. Depressions that will become nostrils are visible, the retinas begin to form, leg buds appear and the arm buds take the shape of paddles.
Cleveland Clinic, week 7
Bones begin replacing soft cartilage, and the genitals begin to form.
Mayo Clinic, week 8
Fingers begin to form, the upper lip and nose have formed, and the trunk and neck begin to straighten.
Embryo development around week 7, by source.
The heart. Cleveland Clinic says the tiny heart tube pulses 110 times a minute by the end of the fifth week, and that by week 6 a provider can probably detect pulses in the cells that will form the heart on a vaginal ultrasound.
Embryo or fetus? Sources date the switch differently. Cleveland Clinic says providers call the embryo a fetus after the 8th week; UPMC says the embryo becomes a fetus at week 10. Both put week 7 in the embryo stage. Cleveland Clinic also notes that some people think the embryo resembles a small tadpole or seahorse at this point, because of its large head and a tail that later recedes.
How Big Is Your Baby at 7 Weeks?
The honest answer: the primary sources we read do not print a measurement for week 7 itself. Here is what they say for the weeks around it.
Source
Timing
Size
What is measured
Cleveland Clinic
End of the second month
About 0.5 to 1 inch long, “about the size of a black bean”
Not stated
Mayo Clinic
By the end of week 8
About 1/2 inch (11 to 14 millimeters)
Crown to rump
UPMC
Week 10
About one inch
Not stated
Baby size near 7 weeks. Sources differ, so each is printed.
Crown to rump means from the top of the head to the bottom of the tailbone. None of these sources gives a weight this early. The black bean comparison is Cleveland Clinic’s and describes the end of month 2, not week 7. We have not estimated a week 7 figure ourselves.
7 Weeks Pregnant Symptoms
Some people feel very pregnant by week 7 and others feel almost nothing.
Symptom
What the sources say
What may help
Tiredness
UPMC says progesterone rises rapidly in the first trimester, making you tired, and that fatigue most often peaks around weeks 7 or 8.
An afternoon nap and short walks (UPMC).
Nausea and vomiting
MedlinePlus says morning sickness often begins 4 to 6 weeks after conception and can come at any time of day. UPMC says nausea is usually worst around week 9.
Small, frequent snacks and bland foods (MedlinePlus).
Sore breasts
UPMC: as your breasts grow and prepare for breastfeeding, they may become sore.
A comfortable, supportive bra.
Peeing more often
MedlinePlus says your kidneys work harder to filter the extra blood your body makes. UPMC says it often picks up near the end of the first trimester.
Limit caffeine but do not cut back on water (UPMC).
Mood swings
UPMC ties them to hormonal changes.
Talking to a friend or therapist, yoga or a walk (UPMC).
Cravings, constipation
Both are on UPMC’s first trimester list.
More water and fiber for constipation (UPMC).
Common symptoms at 7 weeks pregnant.
What helps with nausea. MedlinePlus suggests eating before you get hungry, snacking every 1 to 2 hours instead of large meals, choosing bland foods and avoiding high-fat ones, eating a few soda crackers before you get out of bed, drinking fluids mostly between meals, and taking your prenatal vitamin at night with a little food.
MedlinePlus says to use medicines for morning sickness only after talking with your provider. It also says severe vomiting that will not stop can lead to dehydration and malnutrition, and that this severe form may be diagnosed as hyperemesis gravidarum, which can need treatment. The red flags are at the end of this guide.
Spotting and cramping. UPMC says bleeding can be normal in the first trimester but can also be a sign of a miscarriage or an ectopic pregnancy, and that cramping can be normal but requires a prenatal check-up. Call your provider either way. Wondering whether light early bleeding was implantation? See implantation bleeding.
Baby on the way? Get ahead on sleep.
Our free two-minute quiz builds a gentle, personalized sleep plan you can use from the first weeks at home.
A lot is changing inside, even if nothing shows. Mayo Clinic explains that in early pregnancy the hormone hCG rises quickly, which boosts estrogen and progesterone, the hormones that end your periods and support the growth of the placenta. Our hCG levels by week guide explains the blood test numbers.
The 7 weeks pregnant belly. None of the primary sources we read gives a week by which you should start showing, and bodies differ. Our pregnant belly by month guide shows the usual progression. If nausea means you are eating less right now, mention it at your first visit.
Prenatal Care, Tests and Appointments Around Week 7
If you have not booked your first prenatal visit, call this week. UPMC says it usually happens around 8 weeks and lasts about 45 minutes.
What
When
What happens
Source
First prenatal visit
Usually around 8 weeks
Medical history and the date of your last period (used to estimate the due date), blood tests including blood type, a urine test, blood pressure, height and weight, and a pelvic exam with a Pap smear and swabs for sexually transmitted infections.
UPMC
Early ultrasound
Only if needed
Usually not done at the first visit unless your dates are uncertain or you have bleeding or cramping.
UPMC
Second visit and first routine ultrasound
Usually around weeks 11 to 13
Blood pressure, weight and urine checks, the first ultrasound in most cases, and an offer of screening tests, which you can decline.
UPMC
Prenatal care around 7 weeks, with the timing the source gives.
The 7 weeks pregnant ultrasound. UPMC says an early transvaginal ultrasound can look for a heartbeat after the fifth week, and Cleveland Clinic says a provider can probably detect pulses in the cells that will form the heart on a vaginal ultrasound by week 6. Ask your provider to explain what your scan shows.
Bring to your first visit the first day of your last period and a list of every medicine and supplement you take. The Office on Women’s Health (OWH) says to talk with your doctor before you start or stop any medicine.
What to Do This Week: A Simple Checklist
Take folic acid every day: the Centers for Disease Control and Prevention (CDC) states that all women capable of becoming pregnant should get 400 micrograms (mcg) of folic acid daily. It explains that neural tube defects happen in the first few weeks of pregnancy, often before you know you are pregnant.
Book your first prenatal visit: usually around 8 weeks (UPMC).
Stop alcohol: OWH: there is no known safe amount of alcohol a woman can drink while pregnant.
Quit smoking: OWH links smoking during pregnancy to low birth weight and miscarriage, and says intensive counseling raises your chances of quitting.
Keep caffeine moderate: OWH defines moderate as less than 200 mg a day, about the amount in 12 ounces of coffee.
Learn the food safety list: OWH says to skip refrigerated smoked seafood, deli meats and hot dogs unless steaming hot, unpasteurized milk, juices and soft cheeses, store-made chicken, egg or tuna salads, raw sprouts, and shark, swordfish, king mackerel and tilefish.
Keep moving if you feel up to it: OWH recommends at least 2 hours and 30 minutes of moderate-intensity aerobic activity a week for healthy pregnant women, and says to avoid contact sports and scuba diving.
Sleep at 7 Weeks Pregnant
MedlinePlus says you may need more sleep than usual in early pregnancy and tire easily, because your body is working hard to make a baby, and that sleep tends to get harder later on.
Sleep position. MedlinePlus’s general pregnancy advice is to sleep on your side with your knees bent; it says many providers suggest the left side and that it is best not to sleep flat on your back. It does not tie that advice to a particular week, so ask your provider what they recommend.
Nap when you can: short daytime naps (MedlinePlus).
Keep a schedule: same bedtime and wake time each day (MedlinePlus).
Plan the evening: limit soda, coffee and tea, avoid a lot of fluid or a big meal within a few hours of bed, and do not exercise right before bed (MedlinePlus).
MedlinePlus says not to take any sleep aids, including over-the-counter and herbal products, without talking to your provider. See melatonin during pregnancy.
For Partners: How to Help at 7 Weeks
Take over the smells: nausea can strike at any time of day (UPMC). Cook, take out the trash and keep easy snacks within reach.
Protect sleep: fatigue often peaks about now (UPMC), so pick up a chore to make room for a nap.
Learn the warning signs: read the list below so you know when to call or go to the emergency department.
Looking Ahead: What Comes Next
Week 8: Mayo Clinic gives a size of about 1/2 inch, crown to rump, by the end of the week, and UPMC says the first prenatal visit usually happens around now. Read 8 weeks pregnant next.
Weeks 9 to 10: UPMC says nausea is usually worst around week 9 and that the embryo becomes a fetus at week 10, at about one inch.
Weeks 11 to 13: UPMC says the second visit, usually with the first routine ultrasound and an offer of screening, happens now. See 13 weeks pregnant.
Get emergency help right away for possible signs of an ectopic pregnancy. Mayo Clinic says to seek emergency medical help for any sign of ectopic pregnancy, including:
Severe abdominal or pelvic pain with vaginal bleeding.
Extreme lightheadedness or fainting.
Shoulder pain.
Mayo Clinic adds that light vaginal bleeding and pelvic pain are often the first warning signs, so report those too. If you cannot get to care safely, call 911 and say that you are pregnant.
Call your doctor or midwife for any of these from UPMC’s list. UPMC says that if your symptoms are serious, go to the emergency department:
Vaginal bleeding or spotting, or cramping.
Severe nausea and vomiting.
Green or yellow discharge, or discharge that smells bad.
Pain when you urinate.
A fever above 100.4 F.
Hyperemesis warning signs. MedlinePlus says to call if morning sickness does not improve with home remedies, if you vomit blood or something that looks like coffee grounds, if you lose more than 2 pounds (1 kg) in a week, or if vomiting is severe and will not stop.
If something feels wrong and it is not on any list, call anyway. This article is general education, not medical advice.
Frequently Asked Questions
What is happening at 7 weeks pregnant?
Mayo Clinic says that around week 7 the baby’s brain and face are growing, depressions that will become nostrils are visible, the retinas begin to form, leg buds appear and the arm buds take the shape of paddles. Cleveland Clinic adds that bones begin replacing soft cartilage. Tiredness and nausea are common for you.
How many months is 7 weeks pregnant?
A little under 2 months. Seven weeks is 49 days, counted from the first day of your last period. Cleveland Clinic’s guide, which uses four-week months, places weeks 5 through 8 in month 2. Months are only a convention, and providers track pregnancy in weeks and days.
How big is a baby at 7 weeks?
The primary sources we read do not give a week 7 measurement. Cleveland Clinic says the baby is about 0.5 to 1 inch long by the end of the second month, about the size of a black bean, and Mayo Clinic says about 1/2 inch from crown to rump by the end of week 8.
Can you see a heartbeat on an ultrasound at 7 weeks?
It may be. Cleveland Clinic says a provider can probably detect pulses in the cells that will form the heart on a vaginal ultrasound by week 6, and UPMC says an early transvaginal ultrasound can look for a heartbeat after the fifth week. Ask your provider to explain your own scan.
Is it normal to be so tired at 7 weeks pregnant?
Yes, it is very common. UPMC says progesterone rises rapidly in the first trimester and that fatigue most often peaks around weeks 7 or 8. MedlinePlus says you may need more sleep than usual. Naps, an earlier bedtime and short walks can help.
Is cramping normal at 7 weeks pregnant?
It can be. UPMC says cramping can be normal but requires a prenatal check-up, and that bleeding can be normal but can also be a sign of miscarriage or ectopic pregnancy. Mayo Clinic says severe pelvic pain with bleeding, fainting or shoulder pain needs emergency medical help.
Calmer days, better nights.
Betteroo builds a personalized sleep plan for your baby. Take the free two-minute quiz and have it ready before the newborn weeks.
