I hear about people with ED and having trouble getting it up... Ive always had the opposite problem, can't keep it down... Healthy 19 y.o. Well today, i was in the mood to to jack off... For some reason I just couldnt get hard, it was very very frustrating... I checked porn, thought erotic things, no dice. I tried for about 45 mins with no luck... I am wondering what the heck is goin on. Two things i can think of: Im on biaxin antibiotic (getting tonsils removed and surgeon recommended i start 10 days prior.) also last night I slept under 6 hours... Which isn't uncommon for me but i havent done it in about a month. Other than that, everything is about the same. I will follow up and see if it happens tomorrow and if ishould be worried or not.