Ten Weeks Out
Ten weeks. The number has weight to it. You can hold ten weeks in your head in a way that "two and a half months" doesn't quite capture. There's a due date on a calendar. There's a hospital registration to finish. There's a pediatrician to choose and a car seat to install and a nursery in various states of readiness.
There's also a 3-pound baby doing somersaults inside you, surrounded by about a pint of amniotic fluid, growing approximately half a pound per week for the rest of this pregnancy. Week 30 is a milestone you can feel.
Your Baby This Week
Your baby is about the size of a cabbage, measuring approximately 15.7 inches (40 cm) from head to heel and weighing around 3 pounds (1.4 kg) [1][2]. The body proportions are starting to look more like a newborn: the head is no longer disproportionately large, the limbs are longer and more defined, and the fat accumulating under the skin is beginning to smooth out the wrinkled appearance of earlier weeks.
Red blood cell production has fully shifted to the bone marrow. Earlier in pregnancy, the liver and spleen handled this job, but from now on, bone marrow takes over permanently [2]. This is a significant step in your baby's preparation for independent life.
The eyes are open more frequently now, and your baby can track light. Studies suggest that babies exposed to bright light through the abdominal wall may respond with increased activity or turning toward the source [3]. The brain is processing sensory input at a pace that is genuinely remarkable, and researchers believe REM (rapid eye movement) sleep, associated with dreaming in adults, begins during this period of fetal development.
Dreaming in the Womb
The idea that babies dream before birth sounds poetic, and the science behind it is fascinating. Researchers tracking fetal brain activity using specialized monitoring have observed REM sleep patterns in fetuses as early as 28 to 30 weeks. During REM sleep, the brain is highly active, and eye movements occur beneath closed lids [3].
What a fetus "dreams" about in any experiential sense is unknown. But the REM activity is believed to play a role in brain development itself, helping to reinforce and organize the neural connections being formed at a rapid pace. The sensory input your baby has already accumulated, the sound of your voice, the rhythm of your heartbeat, the filtered light and muffled sounds of the world outside, may be part of what the brain is processing during these periods of active sleep.
What this means practically: your voice and sounds have already made an impression. The music you play, the conversations your baby hears, the rhythm of daily life around them. These are not just pleasant theories. Your baby's brain is awake and taking notes.
Your Body at Thirty Weeks
- Fatigue returning: The energy boost many women experience in the second trimester often fades in the third. Your body is working harder than it has at any point in this pregnancy. Rest without guilt when you can.
- Pelvic pressure: As your baby grows and settles lower, you may feel increasing pressure in the pelvis and lower back. This is normal but can be uncomfortable. A maternity support belt can help distribute weight more evenly.
- Braxton Hicks contractions: These practice contractions may be more noticeable now, particularly in the evenings or after physical activity. They feel like a tightening across the abdomen that resolves on its own. Unlike real contractions, they don't follow a pattern and don't intensify over time.
- Varicose veins and hemorrhoids: Increased blood volume and pressure on pelvic veins can cause both. Staying active, avoiding long periods of standing or sitting, and elevating your feet can help minimize symptoms.
- Itchy skin: As skin stretches to accommodate your growing belly, itching is common. Moisturize regularly. Note: severe itching across the entire body, especially on the palms of the hands and soles of the feet, can be a sign of a liver condition called cholestasis of pregnancy and should be reported to your provider.
The Emotional Side
"I'm dreading what life looks like after the baby arrives." Excitement and dread can occupy the same moment. The anticipation of sleep deprivation, relationship changes, financial pressure, and identity shifts is not pessimism. It is realism. Many women feel pressure to perform excitement while privately mourning the life they are about to leave behind. Both feelings are valid, and acknowledging the dread does not diminish the love. If the dread is escalating into persistent anxiety, your provider can connect you with perinatal mental health support.
What MomDoc Wants You to Know
Choosing a pediatrician before your baby arrives is one of the most practical things you can do in the next few weeks. The first newborn visit happens within 24 to 72 hours of discharge from the hospital, and having that appointment already established means one less phone call to make in the sleep-deprived fog of early parenthood.
At your 30-week visit, your provider will check blood pressure, fundal height, fetal heart tones, and fetal position. If you have questions about your birth plan, now is a good time to start that conversation. The next ten weeks will move faster than you expect.