I've been feeling really off because of this sensitivity issue with my penis after I masturbate. I hit it up and down, and then for days, it gets all tender and sore, coming and going. It's uncomfortable and bums me out. I'm uncircumcised, and a couple of days after masturbating, I touched and pressed the erect penis, and it got super sensitive where I hit it. Now, there's like a pain and itchiness where I pressed it. I couldn't pull back the foreskin completely until I was 11, but there wasn't any infection. Walking and running can feel really uncomfortable. Do you think this will go away on its own? Would love some advice.