Week 18 of Pregnancy
Second trimester
For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
Baby is
about the size of a bell pepper
5.5 inches · 5.5 oz
Baby this week
- •Ear position moves to its final place on the side of the head
- •Reproductive organs are fully developed and distinguishable on ultrasound
- •Baby can hear your voice and respond to sounds
- •Fine motor skills developing—baby may be sucking their thumb
You this week
- •Quickening sensations (feeling baby move for the first or second time)
- •Round ligament pain—sharp twinges or aches in the lower abdomen or groin
- •Increased appetite and food cravings
- •Braxton-Hicks contractions may begin (false labor contractions)
- •Continued back pain as your center of gravity shifts
This week's tips
- •If you haven't already, schedule your mid-pregnancy ultrasound (usually between 18-22 weeks) for detailed anatomical screening
- •Start prenatal pelvic floor exercises (Kegels) to prepare for labor and prevent incontinence
- •Listen to music, read, or talk to your baby—they can hear you and respond to voices
- •Invest in a supportive pregnancy pillow to help with back and hip pain during sleep
- •Stay hydrated and eat frequent small meals to manage hunger and prevent digestive discomfort
Informational only — always check with your doctor or midwife for advice specific to you and your baby.
Looking ahead
You're heading into the second half of pregnancy, and your baby's movements will become stronger and more noticeable over the coming weeks. Many parents find these movements to be the most magical part of pregnancy.
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For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
This content is for informational purposes only and is not medical advice. Every pregnancy and baby is different. Always consult your doctor, midwife, or pediatrician for guidance specific to your situation.
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