during my pregnancy with DS i had SPD a pelvic seperation thing where the hormone 'relaxin' was too high in my body and my pelvis was seperating too much and too early. as a result i couldnt hardly walk by about 30 weeks... i started noticing bad symptoms at 16 weeks... now this time around iv already got bad symptoms....
some other symptoms are extreme pain rolling over in bed, clicky or very painfull hips and pelvis... sore back and pelvis after standing or walking for too long, bad sciatica pain etc.... i hope this helps

There is no cure, the only thing that helps is when the baby is born and even then it takes a few weeks to months to recover!!! you can buy a pregnancy belt that holds your pelvis together but it is very annoying to wear... this time i am going to regularly see a physio, hope it helps me cos it gets really really bad...