So the other day i was at a workout session, when suddenly i feel like a weird pinch of some sort. i go to see if there might of been a bug or something of that nature inside my workout clothes and there was nothing but i started to notice that it was kind of numb. then the next day i noticed a big bruise and as of today its still kind of numb. but i was doing a lunge when it started to tingle and hurt should i be concerned?