retrograde ejaculation and multiple orgasm HALP INTERNET

[VolCanon]

Ew, by "releasing cum into your bladder" you mean you covered up the hole when you came? That makes your body quite unhappy.
The solution is simple, go to a drug store, buy a box of kleenex and then instead to screwing up your urinal tract, use the kleenex (if you're scared of having people find those tissues, throw them into the toilet where they will disintegrate.

Edit: Read the rest of your post. If you jerk off too much you actually RUN OUT OF CUM. Considering you jerked off 11 times in a row, I'd say you dont have any cum left.