Looking for Answers

Hello everyone,
as you can assume from the title, I am new to this nofap thing. Also, I'm not sure if this is the right subsection of forum for my question (if not, I apologise in advance).

To cut to the chase... Recently I found out that I probably have the PIED (not sure how severe though) and I'm desperately looking for answers.

Here is the background story...
I'm 25 years old, grew up in a small town (pretty conservative environment). Since it is not a developed country we got a high speed internet relatively late compared to the rest of the world... Started with masturbating probably around 14 years ago (not sure about the exact time when I actually started)... Decent looking guy, sportsman, exercising frequently, never had a problem of getting girls but however had a first sex with 22 (due to conservative environment). During the first sex, I had a semi working dick. Never blamed porns but rather excessive drinking the night/day before. Soon I broke up with that girl and continued to watch porns whenever I caught the time (however was never actually addicted to them, could easily spent days without watching them).
3 years ago, moved to different country and had relationships/sexual encounters regularly ever since than. During this time had also a semi working dick so sometimes I took some stimulants, sometimes had a chance to perform poorly and sometimes I wasn't completely able to perform... With last girlfriend I wasn't pushing myself too much so I didn't take this lack of performance as something serious. However after I broke up with her, recently I started dating another girl (which I find even more good looking) so I was expecting that my dick would work properly this time. It didn't happen but luckily I had a stimulant so first sex went quite satisfying. After that time, I tried to avoid having sexual encounters as much as I could and had sex just a few times since then (usually with stimulants) and never actually ejaculating (I guess this is also the symptom of PIED).
Important info is that I started exploring the self-development thing more than 3 years ago and during that time I didn't have any problems of not masturbating (sometimes even for few months) but unfortunately I was relapsing every time after those streaks brcause I didn't realized that I have PIED.
I again started the nofap thing a little over a month ago and didn't have any problems/urges so far but occasionally had a sex without ejaculation.
Few days ago I also had a sex with this new girl (with stimulant) and also didn't ejaculate so she wanted to jerk me off and I accepted since I didn't want to make her feel bad and also wanted to avoid the 'blue balls' issue which I have sometimes when I don't ejaculate.

Now, my question is: can I have sex with my girlfriend (without ejaculating) if I'm on the process of getting cured from PIED and will this last orgasm took me again at the beginning of this journey (I ejaculated first time after more then a month)? Should I completely avoid the sex for 90 days* and how can I know that things are getting better? :/

Also any tip for my journey of solving the PIED issue successfully (and faster if that is possible) is very welcome since I'm pretty lost now and kind of desparate tbh!

p.s. English is foreign language to me so don't be too harsh about this post

 

Thank you very much for your answers, I find them really useful.
I ditched the porns for good and if situation is different I would totally abstain from sex for at least 90* days (because I realize the seriousness of the situation) but right now, it's simply not an option.