I am a 16 1/2 year old boy that has trouble ejaculating from masturbation. I masturbate almost daily and when I do I reaach orgasm and can almost "feel" the cum moving up my penis but it very rarely comes out. Additionally, the majority of the time it does come out (about once a month), it comes out in about 1 or 2 drops (white/clear). However , about two months ago I had a really exciting orgasm that resulted in about half a tablespoon of cum. Also, I really have to urinate after I masturbate. I am 5"11, have deepened voice, and hair growing at the typical rate, it seems unlikely that it is related to puberty but I could be wrong.