I don't have an erection in the morning and can't even masturbate as it doesn't get hard, Not helping in intercourse and it always hang, sometime it gets a sort of hard by itself but only sometimes. I take viagra once 2 doses in 12 hours gap may be 50 or 100 mg. And i cannot pee fully, means it feels like some drops are left but not release. I have no problems like diabetes low blood pressure or any low testosterone, even i do workout have a lean body and not consume any alcohol, junk food, cigarettes or anything. It feels like i can't do sex. And i am 23 by the way.