Ahhh!! I did something similar at 26 weeks I was running away from a bird (lol) and I slipped and skidded and strained my groin! The pain was in my groin/vagina area. I literally could not walk without being in extreme agony for hours. Was stiff and sore for days afterwards, but the 5 or so hours immediately following it were so painful! I applied ice to the area, if I could have I would have lain down and alternated between ice and heat. I hope you feel better soon, I feel your pain, it REALLY hurts!