Erecticle dysfunction. Get my penis up.

I have problem of ED. my penis doesnt get hard when i ty to have sex with my partner and sometimes when i get hard it doesnt stay for long. few things i would like to mention 1. when i urinate the throw doesnt go long away, it falls just where i am urinating 2. the problem is on and off. mostly on. thrice i have taken medicines. (a) pushpadhanwa ras of unjha pharma and kaunch pak i took, for 4-5 months, the problem got solved for six months and started again (b) i tool some medicines (dont know what medicines)from swaroop sex cure, ahmedabad for 15 days, that timr i had urge all the time but soon even when i was taking medicines urge disappeared (c) started homeopathic course from dr. hitesh shah bombay, for four months i had good urge and no ed prob but few days ago again the problem started and i dont get hard now. when i go for masturbation, i am able to do it then also sometimes it is not super hard when having sex i cant get my penis up. please suggest forward path.