What is really ED?

So here is my story, I will try to keep it short: I'm a 29 year old virgin. I got married 6 months ago. In my single life I had a porn addiction, I would sometimes masturbate to pornography 5 times a day, only weird thing I noticed is I had an obsession with oral sex, to the point that it was the only thing that got me hard, and also the only type of pornography I consumed. It went like this for years. Other than that, I have never really noticed something being wrong with me. Also I have to mention that I am overweight (not obese), inactive and a smoker. After I got married, my sexual life hit a wall, foreplay with my partner (BJ, HJ etc ..) would keep hard and I would finish, but as soon as the stimulation stops from my partner, my errection would fade away almost instantly, so no normal vaginal sexual relationship was possible. At first I have attributed this to being tired, being virgin (so stressed about the whole sex thing and how to impress my partner), stress and stuff like that. But then, I have noticed that this happens also while masturbating, meaning even if pornography is playing, as soon as my hand stimulation is gone, errection faded away. My partner suggested that I have ED, she also says that my testicules are smaller to what she is used to. My left testicule is definitely bigger than my right, but now I tell myself that my right is maybe very small (which I didn't pay attention to before). At 4 years old I was operated for Cryptorchidism on my right testicule. I stopped porn completely, also I masturbate only once a week now, I started working out and put myself on a protein high diet and started taking zink and vitamines. I did a testosterone test already and booked an appointment with urology, but I have to wait several weeks for the results and the appointment unfortunately. My sexual life with my partner is now at a pause due to a business trip, but I feel like I am sexually fruhstrated. I need help.