Get used to sleeping on your left side. Not only do you get better blood flow, but when you are further along, it helps tremendously with heartburn. I still roll all over from tummy to back but have been practicing sleeping on my left side. It doesn't really matter a whole lot now, but it does help later on.
bren

it never even occured to me there was a better side to sleep on, I have so much to learn (but am blissful in my ignorance for now)

Ive been trying to practice sleeping on my side but I can't do it!
Am I going to damage the bean if I keep rolling onto my front?

Sleepin on your side is perfect, unless doc warns otherwise! Your left side in particular is best because it gets the baby in the perfect position for labour!

Side Laying Babies


Your baby is anterior if he is facing your back. So your baby's spine is curled along the front of your belly and his face is towards your spine. Your baby is "anterior" if his spine is straight up against your belly. If baby position is turned slightly to your right, he is "right anterior;" if he is turned slightly to your left, then he is "left anterior." Anterior is the favored baby position. It allows the baby to most easy maneuver through your pelvis and out into the world.