If you got no problems with hair, you can stay fully natural all you like or just trim, you could try shaving just a bit first. Some people like hairy. Staying fully clean shaved can be irritating when all the hair just keeps growing back but it's up to you or your partner. Some people like hairy.
I used to hold it for two weeks, when I finally then got to ejaculate, my cum had some small lump like things in it
But it's probably not serious. There wasn't much and it doesn't happen while cumming regular amounts per week or something.
When I was a little boy I didn't always know I was supposed to pull the skin back and also wash it from there, like I had no idea I could do that. In one doctor's checkup she tried pulling it back, well, back then it didn't go far back but she also told me to regularly clean from there as well. Ever since I have then tried pulling the skin back more and more until the skin finally came off the head, and also back then washing the head did actually hurt a little. Maybe it was just so sensitive