I'm 23, 5'3" at 135lbs. I've never broken anything or had any major surgeries. I've done alot of hiking in my life but recently as I've been hiking I experience a sharp pain on my inner thigh/groin area that makes hiking up hill extremely painful and after a while its almost impossible to raise my leg. The last incident was about 3 weeks ago and the pain started after about 3 miles. Then yesterday I went hiking and it began after only 1 mile. Whats causing it and how do I get it fixed?