Help! Back/hip pain!

What worked for you first time moms when you had back and hip pain. Mine is only terrible during sleep and when I wake up. I've had sciatica since early on, I'm currently 22 weeks. The lack of sleep it's causing has finally caught up to me and I'm restless all night and irritable all day. My doctor is going to get me into PT but I'm just wondering what else I can do at home to help. Thanks ladies