I experienced the exact same thing, regular activity strong erection and ejaculate. Then suddenly weak on both. Not gradual, not slow loss of interest, like a switch....People are gonna fire bomb this - but it was 2 wks after my JnJ covid shot.
Well, I’m gonna say this DOES sound like a prostate issue. It’s not BPH, the enlargement that comes with age, but could be Prostatitis, which can affect even younger guys. There are 2 types - one is bacterial, the other is non-bacterial & doesn’t respond to antibiotics. I would suggest having your prostate checked - Prostatitis does cause some swelling & it can affect both urination & ejaculation. See your reg Dr 1st, if he/she isn’t able to help, ask for a referral to a Urologist. If you’re embarrassed to talk about masturbation habits, just say ‘sexual activity’, but definitely get checked out. Best to you & let us know how you’re doing…
Your age would be helpful. Sometimes taking a break from masturbation can help reset things. Otherwise, questions like if you take any new medications, if you are stressed, if you are sleeping alright, do you get morning erections all come into play.
I'm guessing you're pretty young if you masturbate that often, am I right about that? Because while one can never rule something out, it's unlikely to be your prostate if you're not past your mid-forties. I'm guessing you're getting bored with yourself. Try finding another hobby, or maybe even a live other person to have sex with, if you're old enough to do that. See if that doesn't fix the problem.