Sharp pains

I'm 35 weeks and having sharp pains in my upper right leg right next to my vagina. I can't think of what to call it. It keeps coming and going but it's so bad that I even fell over and was in tears. The pain shoots up on my right side into my groin area. I've recently ran out of my 30 day script of procardia on Tuesday since I've already been in labor twice now. I don't want to drive to the hospital and get stuck there for days at a time again unless it's time for the baby, I can't stand that place, it's boring and uncomfortable and I start hurting more when I'm there. I've already taken 1000mg of tylenol and soaked in a bath and no help... could this be odd labor pains or baby engaging?