Curved Erection. ED?/PIED?? Please Help.

My girlfriend broke with me and I started fapping to forget her. You know, Loneliness. I always felt horny. I usually stays at home and prepare for exams. I couldn't even able to concentrate. Luckily my gf got back to me after 8months. Re-United. And my first intercourse failed.
The reason is Im not getting erection. Like really HARD enough. And its not fitting in there and slipping down everytime. Started wondering why at that moment.
Dude, I dreamt for this and Im on bed with the girl of my dreams. She told may be its because of FIRST TIME.

We've been on bed many times since then.
Sometimes, the act worked and sometimes not. And each time Im not satisfied. My penis slipping down even if I got erection. Also I don't get erection if lights are on. It goes like, if lights are off, Im On.

I need to confess that I've been fapping almost for 2 years. And recently I noticed that the MY PENIS is in banana curved shape (While erection). And I realised that slippage is due to the missionary position. Imagine how hard it is for a curved penis to get through the missionary.

Im now confused and worried, Is it a ED/PIED? I clearly remember my penis is in the same shape since I started fapping.
But now its slowly bending down.
Am I not eligible for the sexual acts?
Am I impotent now? Oh God. How can I recover if there is a way? Is curved penis is the reason for ED?

PLEASE! PLEASE!! PLEASE DO HELP.