Good evening. 2 days ago while exercising, I fell to my knee and hands from a severe pain in my hamstring muscle. I felt like a pop when a rubber band breaks. I had an xray done at an urgent care&was told to use moist heat&cold therapy,wrap the thigh and elevate. Today, I have developed nasty bruising. Dark purple&blue from the medial groin to underneath glute area. I feel a soft ball in the medial groin and the whole area is swollen down to the popliteal. I do take plavix. So bruising is normal. But, this looks scary. Please help. Thank you in advance.