Week 9
Your baby is the size of a cherry
What's happening this week
This week marks a major milestone: your baby officially transitions from embryo to fetus. It might seem like just a name change, but it signals something profound — the phase of building major organ systems is complete, and the phase of growth and refinement has begun. Every essential organ is now in place. From here on out, it's about maturing and growing.
Your baby is about the size of a cherry — roughly 22 to 23mm from crown to rump — and is starting to look distinctly human. The tail that was visible in earlier weeks is completely gone. The head is still large relative to the body (about half the total length), but the body is beginning to straighten and lengthen.
Tiny toes are now visible, and the fingers have separated — no more webbing. Your baby's eyelids have formed and are fused shut; they won't open again until around week 27. Inside the mouth, the tongue and palate are developing. The ears are continuing to take shape, moving toward their final position on the sides of the head.
The heart has now divided into four chambers and is beating at about 170 to 180 beats per minute — nearly twice as fast as yours. The heart rate will gradually slow over the coming months. Muscles are forming throughout the body, and your baby is making tiny spontaneous movements, though you're still months away from feeling them.
One remarkable detail: the reproductive organs are beginning to develop internally, though it's far too early to determine sex on an ultrasound.
Your body this week
If you've been battling morning sickness since week 6 or 7, here's the light at the end of the tunnel: nausea typically begins improving between weeks 10 and 14 as hCG levels plateau. You're not quite there yet, but the peak is behind you for many people.
You may notice your waistline thickening even though you probably don't have a visible bump yet. Your uterus is about the size of a small grapefruit now — growing from its pre-pregnancy size of roughly a fist. Some people notice their pants feeling snug, while others see no visible change at all. Both are completely normal.
Emotional changes may continue to catch you off guard. You might find yourself tearing up at unexpected moments or feeling anxious about things you'd normally shrug off. Mood swings are a normal part of the hormonal landscape of early pregnancy.
This is a good week to start thinking about prenatal screening. Many providers offer the option of NIPT (non-invasive prenatal testing) starting at week 10, which screens for chromosomal conditions like Down syndrome using a simple blood draw. The nuchal translucency (NT) scan — an ultrasound that measures fluid at the back of your baby's neck — is typically done between weeks 11 and 14. Your provider will discuss which screening options are available and help you decide what's right for your family.
Continue prioritizing hydration, rest, and your prenatal vitamin. And if nausea is still a struggle, hang in there — relief is coming.
For dads
Your baby just made a big developmental leap — going from embryo to fetus — and your partner's first trimester screening window is opening up. Between weeks 10 and 14, she may be offered blood tests and an ultrasound to screen for chromosomal conditions. This is a moment where both of you should understand what these tests can and can't tell you. Do some reading so you can have an informed conversation with your partner about which screenings you want. These decisions are easier to make when both parents are on the same page before the appointment.
Your partner is nearing the home stretch of the toughest part of the first trimester. Nausea may still be present, fatigue is likely persistent, and the emotional weight of keeping a secret (if you haven't shared the news yet) can be isolating. One specific thing you can do this week: take something completely off her plate. Not 'help with' — own it entirely. Whether that's handling all the laundry, doing the weekly grocery run, or managing the bills this month, picking one recurring task and just doing it consistently makes a real difference.
Common concerns
Is it normal for my symptoms to feel less intense this week?+
Yes — some people notice their symptoms starting to ease around week 9, while others won't feel relief until weeks 12-14. Fluctuating symptoms are normal and don't indicate a problem. If all symptoms disappear suddenly, especially before week 10, mention it to your provider at your next visit, but try not to worry — symptom changes are a normal part of the hormonal shifts of early pregnancy.
What is NIPT and should I get it?+
NIPT (non-invasive prenatal testing) is a blood test available starting around week 10 that screens for common chromosomal conditions like Down syndrome, trisomy 18, and trisomy 13. It can also reveal your baby's sex if you want to know. NIPT is a screening test, not a diagnostic one — a positive result would need to be confirmed with further testing. Whether to get NIPT is a personal decision; your healthcare provider can help you weigh the options.
Is it true that the risk of miscarriage drops at this point?+
The risk of miscarriage does decrease as the pregnancy progresses, and seeing or hearing cardiac activity is a reassuring sign. By week 9, the risk has dropped significantly compared to weeks 4-5. The most substantial drop comes after week 12, which is one reason many parents wait until then to share the news. However, there's no single moment where the risk becomes zero — it continues to decrease gradually throughout the first trimester.
When should I be concerned about vaginal discharge?+
Some increase in vaginal discharge is normal during pregnancy — it's typically thin, white or clear, and mild-smelling. Contact your healthcare provider if the discharge is green or yellow, has a strong odor, is accompanied by itching or burning, or if you notice actual bleeding (red or heavy spotting). Changes in discharge can sometimes indicate an infection that needs treatment, so it's always worth mentioning to your provider.
Product picks for week 9
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Belly band for early pregnancy
Lets you wear your regular pants unbuttoned by bridging the gap — perfect for the 'not showing but nothing fits' stage.
Pregnancy-safe skin care set
Hormonal breakouts are common right now — a gentle, pregnancy-safe cleanser and moisturizer can help without harsh chemicals.
Audiobook subscription
Too tired to read but want to stay informed? Pregnancy and parenting audiobooks let you learn while resting or commuting.
A quick note: This content is for informational purposes only and is not a substitute for professional medical advice. Always talk to your healthcare provider about any questions or concerns. Learn how we create our content.
Content based on guidance from the American College of Obstetricians and Gynecologists (ACOG), the American Academy of Pediatrics (AAP), Mayo Clinic, and peer-reviewed medical literature. Learn more about how we create our content.