At 18 weeks
At 18 weeks pregnant, your baby is about the size of a capsicum (shimla mirch), around 14.2 cm from head to bottom (NHS) and about 222 g at the WHO median. Hearing, swallowing and sucking reflexes are developing, and your baby can yawn and hiccup. You may feel the first gentle flutters, known as quickening.
Your Baby at 18 Weeks
This week your baby's hearing, feeling, swallowing and sucking reflexes are developing, and there is plenty of wriggling and moving of arms and legs (NHS). The WHO Fetal Growth Charts give a median estimated weight of about 222 g; healthy babies vary widely, and your scan report is what matters.
Your baby should now have eyebrows, hair and fingernails, and can yawn and hiccup. A layer of myelin is growing to cover the nerve cells, and the bowel is filling with meconium, which will become your baby's first poos (Pregnancy, Birth and Baby).
Your Body This Week
Your blood pressure is probably a little lower than before, so leaping up from the sofa can make you dizzy (NHS). You may feel clumsier as your belly grows, and your breasts may have gone up a size, particularly in a first pregnancy.
Pregnancy, Birth and Baby explains that the growing uterus can press on an artery while you sit or lie down, so standing brings a rush of blood that makes your head spin; rise slowly. Weight gain is expected now, and while you don't need to eat a lot more, a healthy diet matters.
When to call your midwife or doctor: If you haven't felt your baby move by 24 weeks, contact your doctor or midwife, though many women feel nothing for a few more weeks (Pregnancy, Birth and Baby). Seek medical advice for any bleeding, and speak up if you are struggling with day-to-day life (NHS).
Garbh Sanskar This Week
A small daily practice for this stage, from Mamta’s 1:1 sessions. It is tradition and gentle self-care, not medical advice, so keep every check-up and follow your doctor or midwife first.
- Mantra: The Gayatri mantra, from the Rig Veda (3.62.10), meditates on the radiance of Savitr and asks that it stir our minds and insight. Traditions differ on who chants it, so follow your family's practice, and if it feels right, chant softly for a few minutes at a quiet time of day (Garbh Sanskar mantras).
- Music: If you have a scan coming up, a familiar bhajan or calm song can help settle your nerves on the way or in the waiting room. Keep it for you: your own steadiness is the aim.
- Gentle movement: Because dizziness is common now, Mamta teaches a slow way to rise: roll onto your side, push up to sitting, pause for a few easy breaths, then stand. Pair it with a gentle walk, only with your doctor's or midwife's clearance.
- Food: Traditionally, Charaka's fifth month (roughly weeks 18 to 22) recommends ghee made from milk butter, and a spoonful of homemade ghee on dal or rice is one simple way to include it. Have it alongside the iron, calcium and folic acid your doctor recommends.
- Garbh samvad (a line to say to your baby): If that flutter was you, hello, little one. I'm so glad to meet you this way.
Questions About Week 18
What is the anomaly scan at 18 weeks?
It is a detailed ultrasound offered at around 18 to 20 weeks to see if there is anything unusual about your baby's development; the NHS says it can pick up a range of conditions, but not all, and will not hurt you or your baby. Pregnancy, Birth and Baby adds that it also checks your baby's heart rate and rhythm and makes sure the placenta is not lying near or over the cervix.
Why do I feel dizzy when I stand up at 18 weeks?
Your blood pressure is likely to be a bit lower than it was, and your growing uterus can press on an artery when you sit or lie down. When you stand, the sudden rush of blood can make your head spin, so get up slowly, especially from lying down.
What is quickening?
Quickening is the name for the first movements you feel, often described as little flutters in your abdomen. Pregnancy, Birth and Baby says they become clearer kicks and jabs as pregnancy goes on, and you should contact your doctor or midwife if you have felt nothing by 24 weeks.
Practise With Mamta, Wherever You Are
Mamta guides expecting mothers through private 1:1 Garbh Sanskar sessions online, scheduled in your own time zone, from the first trimester to the last week. Start with a free conversation on WhatsApp or read how sessions work.
Sources
Mamta is not a doctor. Medical points on this page come from the sources below, checked in October 2026. Sizes are approximate and babies vary; your scan report is what matters.