Sleeping horrible at night!

Christina • I'm 26 years old, married and pregnant with twins. I already have a 6 and 2 yr old.
I had seen someone else post about their hips hurting so much at night, and does anyone have advice on what to use to help? We have a temperpedic bed and I have a snoodle pregnancy pillow. But nothing is helping. I maybe get a total of 4 hrs each night with the constant flipping back and forth.