Hi, I began taking Propecia about 4 years ago and for a while had no problem ejaculating, and only noticed minimal changes in my sex drive. A little less than a year ago I began to notice I had a slightly lower volume of ejaculate, and it was a bit more watery. Shortly after, I found as I reached climax, I would orgasm but the contractions would sort of come to a halt about 3/4 way through orgasm and very little if any semen if any would be released. At first I thought of the commonly mentioned side effect of decreased ejaculate volume, but there was clearly ejaculate still in there that didn't make it all the way out, as when I squeezed hard around the base of the shaft and worked slowly up like a tube of toothpaste and bent it downward it would release a fairly decent and solid white amount of ejaculate. I am wondering what could be inhibiting ejaculation or keeping the contractions from forcing the sperm out? It feels much more physical than mental, as I am able to get horny and into it all the way up until ejaculation and am even able to get most of an orgasm.