New to NoFap, would love some advice

So I've had ED problems for 2 years now. I'm 29. I haven't fapped for 3 days now... I realize that's not much. But my question is, is it normal that I can't get it up even when I'm masturbating? Watching porn, I just get a weak erection. I ususally fap at least twice a day, sometimes more. I'm not sure if porn can do this to you or if this might be a physical problem. I also never ever have morning wood anymore. I saw two doctors, was given a few Cialis which didn't do a thing... Any advice you guys could give would be greatly appreciated, because my life has been shit for two years.