I (20M) used to have the most amazing sex with my (20F) girlfriend. I can say that for the most part I am only attracted to her and i don’t even feel like watching porn anymore. How ever,this all changed one day when i noticed a very specific thing and i have not been able to perform the same

since. I should probably say that I've been to a psychologist in the past and he suggested that I have some form of OCD but it's not about habits, it's about ideas and thoughts that I can't get out of my head. One day, I noticed that when she is lying on bed, her hair kind of gets crumbled under her neck and spreads to the side and it looks like she has one of those 50s haircuts which i was never fond of. Since then, I haven't been able to enjoy the moment and get a proper erection for the most part. I feel like it's a shame, because she is my soulmate and I honestly didn't even have this problem until the damn thought stuck with me. Should I investigate the ocd thing further and get some help, because sometimes it really intervenes with my daily life,and I hate it that it has also come to affect my sex life with the woman I love.