Hi have you been to an ED clinic?
I'm afraid you will need to ever emphasise the importance of this and how depressed it makes you feel. (As if you needed to state the obvious)
I can't help but feel you have your mindset in your favour, and I do hope you have a 100% supportive partner who can go with you to see your GP, consultant, or whoever, and explain its making her life extremely miserable too.
The problem with your uretha needs a urologist to help with. Surely they can't just say that's it your fixed, sorry about all the damage on the way.
I wish you hope and a steady solution to this