7 weeks pregnant
First trimester about 1 month
At 7 weeks pregnant, your baby is about the size of a blueberry.
Baby this week
About 8–10mm. The brain is growing rapidly, and the face is becoming more defined with visible nostrils and a mouth. Fingers and toes are beginning to form as webbed buds.
Did you know? The embryo's brain is growing by roughly 100 new neurons per minute this week — one of the fastest growth rates of the entire pregnancy.
What she may be feeling
- Nausea and vomiting (often peak)
- Strong food aversions
- Extreme fatigue
- Bloating and gas
- Breast tenderness
- Excessive saliva
- Mood swings
- Headaches
Tips for her this week
- This is often the hardest week for nausea — it will get better, typically by week 12–14.
- If nausea is severe and you can't keep food or water down, contact your doctor — IV fluids may be needed.
- Avoid strong smells as much as possible — they're a major nausea trigger this week.
- It's okay if you can only tolerate bland foods — your baby is getting what it needs.
For partners
- Nausea is likely at its worst this week — your patience is the most important thing you can offer.
- If she can't stomach her usual foods, work with whatever she can tolerate without judgment.
- She may be exhausted by early evening — protect her sleep and wind down routines.
- Start thinking about what paternity leave looks like at your job.
Partner to-do list
- Research what hyperemesis gravidarum is and know the signs
- Cook or order whatever she can tolerate without complaint
- Start looking into paternity leave policies at work
- Check in with her emotionally — not just physically
This week together
- Plan who will attend the first prenatal appointment
- Start a baby names list for fun
- Research childcare options in your area (waiting lists are long)
When to call your doctor or midwife
Contact your care provider right away, or call emergency services, if she has:
- Vomiting more than 3–4 times per day with inability to keep fluids down
- Dizziness or fainting
- Signs of dehydration: dark urine, dry mouth, no urination
- Severe abdominal pain
Trusted guidance: NHS: Pregnancy · NHS: Pregnancy complications · ACOG: Pregnancy · Pregnancy Info: Your pregnancy
Common questions
How big is the baby at 7 weeks?
At 7 weeks pregnant, your baby is about the size of a blueberry. About 8–10mm.
How many months is 7 weeks pregnant?
7 weeks pregnant is about 1 month, in the first trimester.
What can partners do at 7 weeks?
Nausea is likely at its worst this week — your patience is the most important thing you can offer. If she can't stomach her usual foods, work with whatever she can tolerate without judgment.