ED and incontinence ?

Please everyone read what my problem is i know i have typed quite a bit..Im 18. Suffering from incontinence(partial atleast as i have mostly problems only after i go to the toilet) and have been for a while. Well recently it just happened suddenly one day it took me much longer than normal to get an erection but i still can but it takes long and 'sustained thinking' and also when i stand up and stop thinking i lose it quite quickly. Is this ed or what because just three weeks before this i'd have boners in bed that wouldnt go away for a while even after i've stopped fantasizing. Ive had a blood test and testesterone,cholesterol,thyroid,sugar levels are all ok. Only thing different is that ive got a high allergy count and my liver function is bit wrong but according to my doctor it has no effect at all. When i told him my problem he says they is nothing wrong physically with me but at the same time he didnt check me out he reckons its physcological and i do agree with him i think but if it is physcological than it is possible to happen suddenly. Also i dont think i wake up with morning erections. Please advice has anyone know whats wrong with me? Also i know many medical experts may say hat kegal excercises will not help with incontinence but will it in my case? I think i have incontinence because of my masturbation habits? Also now when i do masturbate when im about to orgasm/orgasming than i dont feel those last few seconds of intense feeling that i used to and eventhough i do have premature ejaculation my penis is not as sensitive as it is before and im not complaining if it helps me last longer but im worrying if this all says i have nerve trouble and if i do have is it degenerative?