Sexual anxiety erection problems in a 17 year old

So my girlfriend and I have been having sex for about 5 months now, and about a week ago we had a sex marathon. By the time she wanted to do it a third time I had no sexual desire left and was very tired. I could not get an erection. This was only the beginning, as it sparked a huge anxiety issue. When we tried to do it last night (the first time since I couldn't get it up) I was so scared and anxious it was going to happen again that I couldn't get hard. And now I am so depressed about it I don't even want to leave my room. I love this girl so much and would hate for this to mess our relationship up. I told her about this problem and she was very understanding but I still want to get it figured out ASAP. I don't think I have Erectile disfunction, as I get hard even from kissing her on the couch. But when it comes time for intercourse, the voices telling me "what if I can't get hard" keep me from doing so. I was so freaked out by this last night that i went and threw up in the bathroom. I need help quickly and I would really appreciate some replies on this

Marshall

I think you need to lay off the sex. Like you're overdosing yourself. I think its similar to how ED is cause by porn in some teens, they get to much of it and they can't get hard or go forward with sex. probably just sick to oral or just give her oral and just stop. Don't masturbate, don't do anything sexual for a while

Oy, this is why sex ed is so critically important. What you experienced with loss of desire and inability to get an erection AFTER having sex is called the resolution period and it happens in ALL males after we climax. Duration varies, but in this case not understanding it has caused an actual psychological issue. While it's possible to have sex, climax, do other things for a bit (my go-to idea is usually oral while waiting out the rez') get erect and have more sex, climax, do something else, repeat it's not easy. At the ripe old age of 42 I usually now prefer to ensure I get my partner off to their content before myself. And because I enjoy the journey more than the destination this solution works fine for me. Much as I enjoy getting off, I'd rather be having sex for a few hours then getting off once and then being out of action for the night. At 17 you can probably manage repetitions pretty easily. Just gotta get over the fear of an ED when all that happened was normal biological functioning.

As an aside, my personal idea of why males get this loss of desire and functioninig but women don't, is so we don't schtoop ourselves to death going at it continuously until dying from exhaustion or thirst. Neanderthals who existed alongside homo sapiens (that's us btw) went extinct. I think because they didn't have the resolution period and F'd themselves into extinction (not really, but hey anything's possible.)