Don't stress about it Emma. I'm 24 weeks and still tend to sleep on my tummy at times. If it's comfortable, do it. If it's NOT comfortable, don't do it. I find that sometimes when I do it the baby gives me a good kick and I know I'm pushing my luck so adjust my position. There was a similar thread not long ago and from memory, several BBers sleep on their tummy through pregnancy. HTH.

MG