Nonstop pain for over a year!

Hi everyone, I have been experiencing nonstop pain in my hips for months now.. I had my first son a little over a year ago, the pain started in the end of my pregnancy and just never went away! For the last few months it's just gotten worse and worse.. I cant walk for more than 5 minutes without going super slow and waddling in pain, I cant lay on my side for longer than 10 minutes before I have to switch sides, I cant even sit straight up for long! I cant walk with my husband and son without being in excruciating pain, I cant sleep, and I cant even sit and watch tv at the end of the day.. I'm currently a stay at home mom, but I'm not sure how I could ever work with this if i ever wanted a job. And I'm afraid that our next baby will put me in a wheelchair! Any ideas what's going on or similar experiences??