I need help

Day 16 I lost my virginity. NoFap helped me in many ways and I Relise it's not a fix all but NoFap gives you that push to make you become a better person. I started to workout I was able to talk to girls. I am also, doing so much better in my performance in both school and work. I already scheduled an appointment with the doctor by the way. Now here comes the problem. Once I got to that point where stuff started to get hot and heavy with a very nice looking girl I was dating. I could not get my loyal soldier between my legs up. It took her like 2 minutes to finally get me hard. I lasted about 6 minutes before my erection died down. I didn't cum, and I'm so embarrassed. I told her that it wasn't her I really like the way she looked(I'm 19 years old by the way). From the research, I read that porn can cause erectile dysfunction. I was wondering is there any way to fix this? I'm 17 days clean from pornography. I never thought that porn would do this to me and im truly embarrassed and disappointed in my self. Now that I relise how harmful porn is I will never look at that again. I appreciate any advice and hopefully, porn and the bad sex I had with that lady didn't ruin my chance with her. Still, I appreciate the lesson that this experience has thought me. That real women are way better then porn and porn will ruin your perception of women to a point in where you cant enjoy them. Porn is so harmful and I can't believe I didn't see this before. Hopefully, I'll be able to fix the damages porn has had on my brain. Wish me luck brothers and may you all have success on your NoFap journey and any advice would truly be appreciated