I'm 22 and started taking Finasteride about three weeks ago. I hadn't noticed any side effects at all until a few days ago. I noticed that when I ejaculated I didn't have as much as I used to. Well today I masturbated three times (I know...) and the first time there was quite a few semen (but not as much as normal), the second time there was a tiny bit, and the third there was none. Now between sex and masturbation I've done it 6 times in a day and very rarely ever ran out of semen. Could this be the finasteride? I can't think of anything else. Will this side effect stop the longer I take it or will it only get worse?