Back pain hip pain what should I do???

I been having back and hip pains when I lay down for bed I did everything my doctor told me to do. Put a pillow your me when I sleep dont sleep on one side thru the night take Tylenol take warm showers or baths I did all of them things and I'm still having pains. It getting back now when I walk it feels like I can drop any min when I sit down in the car it takes a min to get out my hip locks up on me when I switch sides when I sleep it hurts i hear my bones pop. What should I do???? Im just 16 weeks and 5 days.