Hi, I am 25 years old, I feel myself extremely healthy(thanks Almighty), I don't smoke/drink(never done it before). I play soccer once in a week(intense) and play ping pong(once or twice in a week). Go to gym twice a week and I am fit. The problem I am having is erectile dysfunction(in my opinion based on what I have found on web). I have never done sex in my life(since I am not married I am not supposed to do it till I get beloved wife.). Now I notice that my c**k is very week and doesn't go hard. It used go hard once in a while even sometimes when I wake up I used to find it hard and very warm temperature. But It doesn't happen anymore. I do masturbation maybe 3 times in a week. Sometimes weeks or even months I don't do it. But I do when I go crazy. Now even if I do, it doesn't go that hard and cement comes out when it is loose and weak. Sometimes if I talk(normal talk, nothing sexual) to a sexy girl I get pre-cum and c**k remains very loose and weak. It gets pre-cum before even it gets erected. Now I am really worried about my sexual life since it doesn't look ok. I don't have confidence at all and if I do masturbation I come like in 15-20 second or so. I have an appointment with my physician next week. I can't even sleep now properly thinking this and deeply feeling bad. I feel like even I can't even pop a girl(break hymen). I heard it takes at least 5-10 min to break which I feel like I am doing to fail. Any idea what is going wrong with my body?

Thanks in advance.
Stay Healthy.