Sticker, firstly when i practice doing a kegel before ejaculating ( for holding it ) i dont stop masturbating, dont know if its wrong but its the way i try to do. About the volume of sperm the comes out - the same thing happened to me i think three or four months ago, but in my case i had overtrained my PC muscles , it became so weak that i couldn't get a 100% erection. and the amount of sperm was too few and used to came out very slowly. I am not saying that you are overtraining . I am just telling what happened to me. I am sure that someone with more knowledge will answer your question
