My brain is so broken that I need to quit porn NOW

Hi! I'm a 21y/o guy who has been PMOing since I was 14 or something like that for like 1 time per day more or less.
Well a month ago I had a lot of stress, University exams, being so fu***ng lonely for like 3 years now (didn't fit very well in College), trips on summer with the only friends I have now so I needed to pass those exams, etc....

So as I felt stressed, I just went to PMO to relax a bit, and heyyy ED guys!!!
From that day I've been very bad, developed severe HOCD because I couln't get an erection even to any kind of straight porn and from that day I have A LOT of anxiety, and because of that feeling I just lost my sexual & emocional will to be with women, and that increased the anxiety a lot more because I know I'm not gay, but my brain keeps telling me that if you are not into straight porn and you don't have a willing towards women, then you are gay bro! and it's like every time I see a man now I get some anxiety like pfff I don't even know how to explain it guys...
I know I'm not gay man, but that "chest pain" that I feel every time that I'm thinking about all this thing scares me a lot man and it's like a circle, it never ends and only gets worse.

So I searched and I found this place, I learned about escalation and desensibilization (I can say that I have experience that, and in a hard way! lesbian, straight, anal, hentai, milf, pov, incest, and more things that I'm not proud to say because they go a lot deeper in this last 3 years that I've been so freacking lonely that I think I have spoken with less that 10 girls in 3 years, and half of them was like for "studiyng reasons") so I want to quit porn so my brain can reboot of almost 8 years of constant dopamine.

The thing is that as I think I've developed severe HOCD and I have a lot of anxiety because of that, i need to keep saying to myself that I feel aroused by straight porn, and a lot of times I relapse on porn just for the anxiety I have. And then as I have a lot of anxiety and I don't see it as a way to get pleasure (it's like i need to CHECK that this still arouses me) and I have hard times to get a nice erection, that increases the anxiety and again and again and again guys, it's a circle that never ends....
I don't know what to do anymore...

 

I'm now witha pshycologist and pfff let's see how is it going, but I don't know man, I just want to live like before, even if I have to be lonely and depressed, but at leats my sexual identity was not in a constant doubt....