Hello. After exercising for about 30 minutes I was doing stretches. I tried to do a forward split and was surprised at how low I could get, so I pushed myself down a little more and heard a pop in my hip of the leg that was out in front of me. I was able to walk, to go up the stairs, etc., but was very careful about doing so. I put ice on the back of my leg, have it elevated and tied a band around it. Is this a hamstring pull? I will go to a doctor tomorrow.