Groin Strain?

My right hip has been giving me some slight trouble since I took an awkward fall about 1 month ago. When it happened I felt no pain. The next day I started having some mild pain on the outside of my leg near my hip when walking. I have had this pain on and off for the past month. Yesterday I went to the climbing gym. I didn't do anything that felt strange, but after I had been home for a while I got up and could barely walk at all on my left leg. I also now have a stinging pain in my inner thigh (groin area), as well as the pain on the outside of my leg by my hip on the left leg. It felt better after a little rest, but it feels weird to walk on and the pains returns shortly after I start walking on it, even after some rest. Any help would be great. thanks, Morgan