I recently decided to get into tumbling. My first practice was last Thrusday. Everything was fine. I was a tad bit sore but that was normal cause it was my first time tumbling. I started practicing at home and then out of nowhere, I get this immense pain in my inner thigh/groin area. It pops occasionally, and it always feels tense like it's about to pop. I can lift my leg up to the side and back but not to the front. I tried doing streches as well. That didn't work. It doesn't look inflamed or swollen to me. Help?