Reassurance Needed (ED vs. PIED)

Hi everyone, so I need some feedback from you to somewhat settle my mindset.

I've been on and off this train and I am sick of failing.

I'm 32. So this is going on since I was 19 (horrific). When I first had sex, I was able to orgasm and held strong erections in bed. No issues and at sometimes, I would orgasm before her, other times at the same time.

When my gf moved away for school, I made the mistake of trying masturbation along with porn. In doing so, I was unable to get an erection with her since I was addicted to PMO and would do so multiple times a day.

In my most recent events, I find myself 4 days in. I was with a girl, was in some foreplay in my living room and was able to achieve an erection. At the time, she offered to go to my room but I lost my erection. I was unable to achieve it.

When I masturbate and read fiction or view content on tumblr, I get an erection. I also don't use lubrication.

I've also awakened in the middle of the night and experienced what feels like nocturnal erections just from the phase of sleep.

Is this PIED or regular ED?

Do you think it's worth seeing a urologist or another specialist?

Any suggestions for naturally boosting testosterone?