At 8 weeks pregnant, your baby is roughly the size of a raspberry and developing rapidly, with fingers starting to form, eyes becoming visible, and a heartbeat that can often be detected on ultrasound. Meanwhile, your body is deep in the hormonal surge of early pregnancy, which means symptoms like nausea, breast tenderness, and fatigue are likely at or near their peak.
How Your Baby Is Developing
Week 8 is a busy time for your baby’s body. The leg buds are taking on a paddle-like shape, and individual fingers have begun to form. Small swellings that will become the outer ears are appearing, and the eyes are now noticeable. The upper lip and nose have formed, and the trunk and neck are starting to straighten out from their earlier curled position.
Your baby’s heart has been beating for a couple of weeks at this point and is getting faster. The average fetal heart rate climbs from around 110 beats per minute at 5 to 6 weeks up to roughly 170 bpm by weeks 9 to 10, so at week 8 it falls somewhere in between. Hearing that rapid heartbeat on ultrasound for the first time can be surprising since it’s much faster than an adult’s. Once a heartbeat is confirmed at 8 weeks, the chance of the pregnancy continuing rises to about 98%.
Common Symptoms You Might Feel
The hormone that pregnancy tests detect, hCG, is surging right now. Levels at 8 weeks typically range from 32,000 to 210,000 µ/L, and they continue climbing toward their peak near the end of the first trimester. That hormonal flood drives many of the symptoms you’re experiencing.
The most common ones at this stage include:
- Nausea or morning sickness. Despite the name, it can hit at any time of day. For many people, weeks 8 through 10 are the worst before symptoms start easing in the second trimester.
- Sore or tender breasts. Increased blood flow and hormonal changes make breast tissue feel swollen, heavy, or sensitive to touch.
- Frequent urination. Your uterus is growing and beginning to press on your bladder, even though it’s still tucked inside your pelvis.
- Cramps that feel like period pain. Mild cramping is normal as your uterus expands. Sharp or severe pain is worth reporting to your provider.
- Fatigue. Your body is building a placenta and increasing its blood volume, which takes enormous energy. The exhaustion is real, not in your head.
Your clothes may also start feeling tighter around the waist. The uterus is swelling even though you probably don’t have a visible bump yet, and bloating from progesterone adds to that snug feeling.
Your First Prenatal Visit
Many people schedule their first prenatal appointment around week 8, though anywhere from 6 to 10 weeks is typical. This visit tends to be the longest one you’ll have because your provider is establishing a full health baseline.
Expect a round of blood tests. These usually check your blood type and Rh factor (a protein on red blood cells that matters for pregnancy management), your hemoglobin levels to screen for anemia, your immunity to infections like rubella and chickenpox, and exposure to infections such as hepatitis B, syphilis, and HIV. A urine sample is also standard to check for urinary tract infections and protein levels.
If an ultrasound is done at this visit, it’s often transvaginal rather than the abdominal type you might picture, because the baby is still very small and a transvaginal probe gives a much clearer image this early. You’ll likely see the gestational sac, the yolk sac, and your baby’s flickering heartbeat. If you’re carrying twins, an early ultrasound between 6 and 9 weeks can usually confirm it and determine whether the babies share a placenta or sac, which shapes how your care is managed going forward.
Nutrition That Matters Right Now
Your baby’s brain and spinal cord are forming rapidly at week 8, which makes certain nutrients especially important. Folic acid gets most of the attention (and you should already be taking it), but choline is equally critical for brain and spinal cord development. The recommended intake during pregnancy is 450 milligrams per day. Eggs are one of the best sources, with a single large egg providing about 150 mg. Meat, fish, and soybeans also contribute.
Omega-3 fatty acids support fetal brain development both before and after birth. Fatty fish like salmon is a good source, though many people prefer a supplement if nausea makes fish unappealing. If you’re struggling to eat much of anything right now because of morning sickness, focus on whatever stays down. Small, frequent meals tend to be easier to tolerate than three large ones, and bland carbohydrates like crackers or toast are a classic fallback for a reason.
What Spotting and Cramping Mean
Light spotting in the first trimester is common and often harmless, caused by things like the cervix being more sensitive to increased blood flow. Mild cramping is also normal as the uterus stretches. That said, heavy bleeding (soaking a pad in an hour), severe one-sided pain, or cramping that gets progressively worse are signs that something else could be going on, such as a miscarriage or ectopic pregnancy, and need prompt evaluation.
The overall risk of miscarriage drops significantly once a heartbeat is visible. At 8 weeks with a confirmed heartbeat, roughly 98% of pregnancies continue. That number can be reassuring if you’re feeling anxious, though some worry in early pregnancy is entirely normal.
What the Next Few Weeks Look Like
By the end of week 8, your baby is technically transitioning from an embryo to a fetus, a milestone that reflects how much basic organ structure is already in place. Over the next several weeks, those structures will refine and grow. Nausea typically peaks around weeks 8 to 10 and begins improving for most people by weeks 12 to 14. Your energy levels usually rebound in the second trimester as well. The next ultrasound is often scheduled around weeks 11 to 13 for a nuchal translucency screening, which assesses certain developmental markers. Until then, the main priorities are staying nourished, resting when you can, and keeping up with your prenatal vitamins.