you have a main vain that runs down your belly that is behind your uterus and when you lay on your back the baby lays on that main vain . I don't know what your OB is talking about I know from experience I almost lost my son and went unconscious and I was only on my back for an ultrasound

@chelsea0820, ?? my ob told me to sleep on my back instead of stomach

your not supposed to sleep on your back. it cuts off circulation to the baby

The snoogle pregnancy pillow has been a life saver for me

I sleep with a body pillow, a regular one from like wal mart under my belly and partially between my legs. It's the most comfortable way I found to sleep since it's now uncomfortable for me to sleep on my belly

@kaidenleewadesmommy, mine was like maybe 40 bucks I got it from off of Amazon.com

@kaidenleewadesmommy, Absolutely not I've never heard that before I slept on my stomach til I was 5.5 months

@poodie87, I slept with pillows under my back last night and kept waking up . and aren't the body pillows like 50$??

@kaidenleewadesmommy, I never heard that you can kill your baby some people can still sleep on their stomach. However I sleep on my sides with my body pillow or I would sleep prompt up with pillows behind my back and head

I always slept on my stomach! Not literally ON it but just make sure you're comfortable. My doctor always told me I can sleep anyway I want as long as I'm comfortable :)

@bellamama09, I was told if I try my stomach I'll kill my baby?

Sleep however is comfortable, your body will let you know if can't handle it