Try sleeping with bent legs and pillow in between your legs while side sleeping. This level ur top leg and reduce back pain. Try research a few articles of pregnancy sleeping position will help. I am a plus size so this position helps me with my back.
I know there are some chiros that can help with pregnancy sore/pain! i think i saw some good reviewed once u can just google
May be try focusing on your posture like: stand up straight; Keep your shoulders back and relaxed.
Neilesh