I am a 17 year old male, currently on a 57 day no PMO streak. I have had several streaks in the past all ending in relapse. Through these times(except for the beginning), I was able to have successful sex with my girlfriend with no erectile dysfunction. Although about a month ago we are some cannabis brownies and tried to have sex but my dick couldn't get fully erect. The same thing has happened the past 2 times. I just go limp in the dick and I'm not on a flatline because I get morningwood and have sexual desire. I've come to the conclusion that it might just be performance anxiety and feel like I will never get hard again. If anybody has any tips that would be a major help to my life, thank you.