Recovering From Porn-Induced Erectile Dysfunction?

I've been reading up about it a lot, but haven't got the answer I'm looking for. Basically, i used to masturbate/watch porn about once a day. And i noticed that i would never get an erection when I'm around a girl. So i stopped watching porn/masturbating about 4 days ago and I'm already starting to get erections at completely random times, like how i used to before i started masturbating. Is this a sign that I'm healing? I'm 16 and i hear it takes less time for teens/young males to recover. But how long would any of you suggest i wait before trying to have sex again? I hear it's only psychological.