Does Anyone Know What This Hip Pain Could Be???

Hi everyone. I thought that someone here might be able to help me or give advice. I'm at my wits end and am just being passed around from dr to Dr. I've have sharp hip pain that started about 4 months ago in my right hip. It then started in my left about a month later. I noticed at first it just felt tight. When it started in my left leg it felt like it just wouldn't stretch out all of the way when I was walking. After I sat down for a while, I would stand up and start walking and get a twinge in what felt like deep within the joint. I couldn't actually push on anything and make it worse. They've both gotten worse to the point that when I stand up I have to walk for a minute or so before they'll "stretch out" enough for the pain to go away. I'm basically always just having to limp it off. I've had chronic back pain for 9 years after an accident also. When I lay down or sit with weight on my right side, the thigh gets horrible pins and needles and then goes completely numb. I went to an orthopedic dr who did xrays and an mri of my hips sure that something would show up but nothing. He's referring me again to a physiatrist because he doesn't have a clue. I've gotten to the point know where my hips just constantly feel tight and painful a lot. I can't walk normally at all after I stand up. Physical therapy did nothing. The only way that the dr can make this pain occur manually is when i'm laying on my back with my knee bent up toward my chest and he pushes on my foot and I push back against his hand (if that makes any sense!). Sorry so long, I just really hope I can find someone with something similar or some advice! Thanks, danielle