Tips to making rolling over easier

This probably sounds ridiculous right. But Im almost 25 weeks and rolling over is a nightmare.

Im petite but have gained 20lbs and the adjustment to this is insane!

I also have left sided rib pain so when I roll from left to right it feels like my rib is splintering.

Using a pillow to prop up behind my back when Im on one side makes it that much harder to roll that way later.

WHAT AM I MISSING

HOW DO I SLEEP