I can feel a small lump in or along side the urethra in the center of my penis, just below the base of my head. i noticed it one day when i had an obnoxious erection most of an entire day - after i woke up from a nap where i'm pretty certain my laying on my stomach caused it to bend near that same spot where it tapers toward the tip / bottom/back of the head.
It stung at the spot I found the bump, and when erect hurt like when a scab is on a piece of skin that stretches - the pain when you extend an arm for example, and an area healed and is being pulled apart by the stretch, not yet healed to elasticity and causes pain.
it has been a couple weeks and the pain is mostly gone. the sting is only there if i squeeze the lump inside. when i have an erection now, the tip of my head looks like i'm pulling the skin on the bottom down just a tiny bit, and when i look at it (camera) from the side, it looks like about a fingertip amount is sunk in on the bottom side of where it hurt.
during the first few days of the pain, during sex, the wife was on top and bent it right where it hurt on accident, and the pain was horrible. don't know if i bent it while i was asleep originally and caused some sort of damage that didn't heal right, causing the lump, or if a lump grew causing the pain and the following.
do not have insurance until later in the year, but am really curious as to what it could be. looked up as much as i could and none of it sounds right.