Hello all,20 year old male, I am an idiot and for the past few months while masturbating I have been tying a cord very tightly around my scrotum. Not right next to the testicles, but where the scrotum meets the base of the penis. I completely ignored the possible dangers of damage that I could have caused by doing this. I did it because it made ejaculations feel better. After I ejaculated I would remove the cord.Fast forward to today, I barely have any sensitivity in my scrotum/testicles. For example, I could usually give myself an erection just by lightly tickling my scrotum, but now when I tickle my scrotum I don't even feel anything (nerve damage from tying the cord too tightly?). Also both of my testicles maybe feel like they are getting smaller? I can't tell. And they feel different.....not sure how to describe but growing up, I could always give myself pleasure / an erection just by massaging my balls but now when I try to massage them....my scrotum doesnt tighten up and I just feel like I am playing with a loose bag of marbles. My scrotum does occasionally tighten up but my ejaculations havent been very strong.I also am pretty sure I have a varicocele above my left testicle (could that also be from the cord?) and I am really worried about that and am planing on going to the urologist in a few days because it could cause infertility.What I need you guys to help me with right now is.....How do I tell if I caused any damage by using the cord? How do I tell if my testicles are 'dead'? What symptoms would I have? I know I would have low testosterone...but I can't find that out until I go get it measured at the doctors. Is there any way I can examine myself at home to see if I have caused any damage to my scrotum/testicles by using the tight cord? Would I be feeling anything? I am too embarassed to mention the cord when I go to the doctor because my family will probably also go to the doctors with me....so I am asking you guys for help because I am worried sick.Thank you for reading.