Pregnancy week 7: symptoms, ultrasound and baby size
Pregnancy week 7 is truly magical: if you have a scan now, you can already see and hear your baby’s heart beating strongly ❤️. Symptoms are at their peak — I know it feels tough — but inside, your little one is growing at full speed. Let me tell you everything that’s happening.
If you’re coming from pregnancy week 6, this week is the direct continuation of everything I told you there. And for the full journey, see our pregnancy week by week guide.
What is pregnancy week 7?
Pregnancy weeks are counted from the first day of your last period (LMP), not from conception. That means in week 7 you are about 5 weeks from fertilisation, and your baby is firmly implanted and growing without pause.
You are well into the first trimester, the most delicate but also the most exciting stage. The embryo already has a beating heart, the brain, face and limbs are forming, and the placenta is starting to take over hormone production.
What can you see on the week 7 scan?
This is one of the best weeks for the first ultrasound. Most doctors schedule it between weeks 6 and 8, and in week 7 you can already see quite clearly:
- The gestational sac and the embryo inside it.
- The heartbeat, already beating very fast (around 140–170 beats per minute).
- The crown-rump length (CRL), the measurement used to date the pregnancy accurately.
Hearing that heartbeat for the first time is unforgettable. If you haven’t confirmed the pregnancy yet, this is a perfect week to do so: hCG levels are very high and any test will be reliable. You can take our free online pregnancy test to reflect on your symptoms, and if you fancy a distraction, try our finger pregnancy test game: it’s just a game, not a real test.
What symptoms are normal in week 7?
If week 6 was intense, week 7 is no different — hCG remains very high and you feel it. It’s normal to notice:
- Strong nausea, with or without vomiting: the peak is usually between weeks 7 and 9. Eating little and often helps.
- Extreme fatigue: your body is building the placenta and the baby’s heart is beating non-stop.
- Very tender, swollen, tingling breasts: you may already feel your bra is tighter.
- Frequent urge to urinate: the uterus, now the size of an orange, presses on the bladder.
- Aversion to smells and foods and, at the same time, sudden cravings.
- Mood swings: you laugh and cry easily — hormones are in full swing.
- Excess saliva and heartburn: very common right now.
- Light spotting or more discharge: if it’s scant and without strong pain, it’s usually normal, but get checked if you’re worried. More in how discharge looks in pregnancy.
No nausea or barely any symptoms? That’s also normal — every pregnancy is different and feeling little doesn’t mean something is wrong.
How big is the baby in week 7?
The embryo in week 7 measures about 10 millimetres (1 centimetre): the size of a blueberry. It sounds tiny, but progress is astonishing:
- The heart is beating strongly and pumping blood around the whole body.
- Arms and legs lengthen and elbows and paddle-shaped hands appear; fingers start to form.
- Eyes (with forming eyelids), nostrils and the ear become more distinct.
- The brain grows very quickly and the cerebral hemispheres form.
- The umbilical cord already connects the embryo to the placenta, which takes on more functions each day.
Your uterus is already the size of an orange, even if nothing shows on the outside yet.
Tips for week 7
- Book your first antenatal appointment if you haven’t yet: between weeks 7 and 8 the first scan and initial blood tests are usually done.
- Keep taking folic acid: still essential for neural tube development. I explain everything in folic acid in pregnancy.
- Eat little and often to ease nausea and avoid raw foods, alcohol and smoking.
- Stay hydrated and rest whenever you can — sleep is your best ally now.
- Don’t self-medicate: always ask your doctor before taking anything, even for heartburn or headaches.
- Work out your due date with the gestogram and track your week with how many weeks pregnant am I.
If vomiting is very frequent and you can’t keep fluids down, or you have intense one-sided pain with bleeding, contact your doctor promptly.
FAQ
What month am I in during week 7? You’re still in month 2: weeks 5–8 make up the second month. Counting starts on the first day of your last period, not the day of conception.
Can the heartbeat be seen in week 7? Yes, in most cases it can be seen and heard clearly. It beats very fast, around 140–170 beats per minute. If it’s not visible yet, don’t worry: sometimes the embryo is facing away or dates are a few days off and it shows a few days later.
How big is the baby in week 7? About 10 millimetres — like a blueberry. Arms, legs and basic facial features can already be distinguished on a scan.
Is strong nausea normal in week 7? Yes, it’s the peak of nausea due to high hCG. It usually improves after week 12. Small meals, avoiding strong smells and keeping crackers by the bed can help.
Can I exercise in week 7? If yours is a low-risk pregnancy, walking, gentle swimming or prenatal yoga is usually fine. Avoid high-impact or contact sports and always check with your doctor.
Remember this article is for information only. If you have questions about your health or think you may be pregnant, talk to your doctor. They can advise on the right tests and support you through this special time ❤️.
