hey, few hours ago i was sitting on my chair watching something on copmputer. but afer like 30 minutes i relized i was actualy sitting on my foot, it means my foot was under my body. to be exact the foot's heel was between my anus and testicles. so when i changed my sitting possition, that area was numb (like when you sitting hard on some part of your body for too long and then you get the feeling it's numb because the blood didn't flow in that area). again after a few minutes i accidently touched my penis and it was hurting so bad and kind of numb, i felt so much pressure, i think because the blood was running back, i was terrified so i try to shake or move my penis a little bit and it got a little better. but after a few hours i was still feeling the pressure, so i masturbated once (for some reason i thought it wold be helpfull) but as i got more erected the pressured got worse and i felt so much blood running through my penis and it felt so warm and bigger and much more red. now again after an hour it's at it smallest but still feel like so much blood trapped inside and so much pressure. i'm really scared, what should i do?