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.

It sounds like you may have experienced temporary sensitivity or soreness from friction or pressure during masturbation, especially around the foreskin area. This can cause discomfort and irritation, but it usually resolves with rest and avoiding further pressure or friction. If symptoms persist or worsen, it's a good idea to see a healthcare provider for a thorough evaluation and to rule out any underlying issues.