I know I'm a few months behind getting in on this conversation, but thought I'd share my experience. I was in a car accident in 1999 and broke my pelvis in 7 places and shattered my right hip socket. My fractures were repaired using external fixation. With my first pregnancy (over 2 years ago), I had a LOT of pain. Towards the end of my pregnancy (the last month or so), there were many days that I could hardly walk. The only recommendation that my doctor could come up with to help with the pain was pain meds, which I refused. However, I started a beginner level water aerobics class, which provided some relief - just being in the water took all the pressure off of my hips. But of course, as soon as I got out of the pool, the pain was back. I met with an orthopedic doctor at some point in my 3rd trimester, but the doctor was a total jerk and just said, "every pregnant woman has pelvis pain, whether they've injured their pelvis or not." She told me there was nothing she could do for me and sent me on my way.
The good news, though, is that as awful as the pain was, it really didn't effect my pregnancy at all. I delivered vaginally with no complications at all. Labor was very painful, though, because every time I laid on my back, my baby's heart rate would slow, so the nurses were requiring me to lay on my side, which was very painful for me with my pelvic injuries. The pelvic pain was so severe during labor that I did require some pain meds and ultimately had to get an epidural. (I had hoped for a natural med-free delivery, so this was a little disappointing for me). My baby was 2 weeks overdue and weighed in at a hefty 8 lbs 14 oz. She was perfectly healthy.
Almost immediately after delivery (within only a couple hours!), I realized that my pelvic pain was nearly entirely gone! I am not exaggerating here, the relief was seriously that quick. When I was released from the hospital a couple days later, I felt better than I had in months! I could walk normally, I could lay down and roll over in bed without pain, bending and standing up were pain free.
I'm 6 1/2 months pregnant with my 2nd child right now and the pain that I'm experiencing this time around is much more severe than with my 1st. Sleeping is so painful for me. I wake in extreme pain every couple hours and just the act of rolling over causes sharp pain throughout my hips and back. I have found that sleeping in a recliner is the most comfortable for me. The pain has been so severe this time, that I've already come to the conclusion that this will be my last pregnancy because it's just so hard to spend so many months in extreme pain. 2 babies is good enough for me! If I get the itch for a 3rd, I'll adopt!
I try my best to just stay positive and be very thankful for the fact that I can even carry a child. I am also grateful that I was able to deliver vaginally with my first and hopefully will again with my second. With my second delivery, I think I'll be more accepting of the epidural and just realize that I'm not any type of failure for not being able to endure the pain.
Good luck to you with your pregnancy! Wishing you all the best!