I need help.I’m 18 and I’ve been with my girlfriend for a good amount of time and it’s looking quite stable and good (we’ve had sex a good few times before and I haven’t had any problem really) But about a week ago we were home alone and I was hard from kissing and cuddling and I started eating her out and fingering her (I had my pants on still) and then when we went to penetration and I had gone soft at the time she was very understanding and I said it was because I was tired (I was as I had a long week) and this had never happened before as usually I could stay hard during the foreplay (only her) and then move to sex. Then after a genuinely shattering experience like honestly I would of rather be stabbed I just wanted to die it was BAD, whether it was because I wasn’t getting foreplay or I was tired or whatever it hurt. So I spent a few days researching and the stuff I saw scared me. What if I had Ed and couldn’t satisfy her any more, I’m gonna lose her, I love this girl truly and she’s attractive as I get hard this is my fault. And I got scared. But then I went over again and we had a nap and I got hard while sleeping and then she wanted me off and I was scared I’d go soft again and took it off her at one point to check I was hard and then I stayed hard and came and made her cum aswell with my fingers. So I don’t think it’s a medical Ed problem but now a week after everything happened If get hard on my own and it’s in my pants it’s okay but as soon as I take it out my pants and don’t touch it, it goes down (on my own) and everything I think about it eating feels bad like I feel sick to my stomach and I just need answers so can someone please explain this to me and if you need more info just ask. Thankyou