i was recently playing basketball and when jumping in air with legs spread (i was hotdogging) my legs quickly flexed back in and i felt pain in my left testicle's area. Not sure what to think of this...did i sprain a muscle down there? It only really hurts when i cough or take a sideways step and the pain is mild. Also the same day i had trouble getting an erection... I think it'd be wise to mention i've also been sick for 3 weeks, am very tired, and nervous about my condition haha...please post back with ideas of what this could be. Should i give it a little more time? Should i see a doctor? And i will be doing heavy lifting this coming week...