Hi, I am 14 years old, and whenever I take part in sexual activity, whether it's from masturbating to sex, my left calf tightens up. It hurts a lot! It's not as bad when I masturbate, but if I'm getting a blowjob or am participating in inter coarse, it hurts for several days. Is there a problem with my leg? Or is this natural. I would like to ask my father but I wanna avoid the awkward conversation, so here I am. Any advice? Please and thank you