when did you stop sleeping on yiur belly?

Andra
I am currently 11 weeks (yaaay) and can't fall asleep ifi am nit on my belly. I am worried i ll hurt the baby and it is startjng to get a bit uncomfy. So i try to sleep on my side,but i still lay a little on my belly. So, ladies,when did you stop sleeping on your belly and which is your most comfy poaition?