HI Liberty & congrats on your pregnancy! I am 37 weeks right now but I slept on my stomach until I was 7 months. I was very small up until about 3 weeks ago.
Now I can't sleep on it!!!! LOL But anyway my doc said it was fine.The baby is well protected.She said sleeping on your left side is really the best but if you can put a pillow between your legs or kinda under your belly a little bit when your on your belly that would help! Good luck! Enjoy the belly sleeping while you can!