I'm 31 weeks pregnant and about five hours ago I had a pilates class, it was with a new teacher so slightly different exercises than usual but definitely nothing strenuous or 'dangerous' seeming. Since then I've had bad pain in my pubic bone (not the whole area, just where pubic hair is), it's hard to describe. Very tender, lots of trapped nerves type feeling I think. Better when I'm lying then when sitting up, very achey when I sit up. Till now I haven't had any problems with pelvis pain, walking etc and though have quite a big bump I'm still slim and light. Any ideas? Have heard of SPD but this doesn't seem like that. Thank you!