At 33 weeks pregnant you are in the third trimester, with about 7 weeks to go until a 40-week due date. Weeks are counted from the first day of your last period, so this is roughly month 8 of pregnancy.
How big is your baby at 33 weeks?
Around week 33, your baby is often compared to a pineapple. Fruit and vegetable comparisons are a friendly way to picture the size, not an exact measurement.
From the INTERGROWTH-21st international standard (University of Oxford), the median estimated fetal weight at 33 weeks is about 1.95 kg. Most healthy babies fall between roughly 1.47 kg and 2.57 kg (about the 2nd to 98th percentile). Scan estimates carry some margin of error, so a number on its own is rarely a reason to worry. Our guide on reading the weight on your scan report explains more, and the baby weight checker lets you enter your own report.
The third trimester runs from week 28 until birth. The baby gains most of its weight now, and your body prepares for labour.
Your body at 33 weeks
Pelvic pressure and aches rise. It may be hard to find a comfy position at night.
What is going on
Your pelvis is preparing for birth, and the joints loosen. This can cause pelvic or pubic bone pain, especially when you roll over, climb stairs or walk.
What can help
Move slowly, keep your knees together when turning in bed and ask about a physiotherapist if the pain is strong.
Other weeks
31 weeks pregnant · 32 weeks pregnant · 34 weeks pregnant · 35 weeks pregnant
See all weeks on the pregnancy week by week page, or try the interactive week-by-week guide.