My brain craves porn badly

You are getting more normal, the girls you described as ugly may likely just to be more common girls as opposed to the super models girls you are used to in the porn videos. Sounds like your taste in women are going back to its natural default state.

 

You're okay man. If you're feeling frustrated, hit the track or some weights, exhaust yourself. You'll feel better. Also if you're attracted to a chick that's less than a 10 why is that a bad thing? If you're attracted to someone, just go with it, if you're not, then don't. You're 20 days in, don't break that for a brief and unrewarding time that will only fill you with fury. Keep talking to the brothers here man.

 

You're stronger than that man! Dig deep and conquer this. Don't let this thing dominate you.