Ah, I remember the aching hips from side-lying. I used to get up in the middle of the night and wander around the house because I just couldn't lie on my poor hips all night. I would recommend getting one of those body pillows - if you're at 30 weeks you'll still get plenty of use out of it. My uncomfortable nights started later on in the pregnancy and I didn't think it was worth getting the pillow. Wish I had, tho - I've heard such good things about them.