I have been having issues with severe retroactive jealousy but at the weirdest times. I am in a relatively longterm relationship and early on i struggled with my girlfriends sexual history (immature af i know). She has a pretty high body count and has done things with people who definitely didn’t deserve her in that way. This led to me constantly questioning her about things and digging on what she did way earlier on in the relationship. Its been awhile since I’ve done it again so ive been happy to not constantly have these thoughts. But recently during sex with her or if i am watching porn alone these things will pop up in my in the form of a voice just saying things shes done or random shit shes told me in confidence. I feel like shit. I cant enjoy sex or masturbation without these mental movies or voices popping up randomly. Im rambling right now but does anyone have similar experiences ?
Lowkey struggled with the same thing with my first few girlfriends. I got over it with time. What I kind of realized was no matter the girl, most have had an extensive sexual past, even if they seem innocent (this goes for most relatively attractive women). I kind of felt frustrated because I was “preserving myself” even though I was totally capable of just going out and getting with a bunch of girls, but the pool of girls I had to chose from had all gotten with at least 10 guys. Now this next part won’t be helpful because you are actively in a relationship, and if you really love her, I would advise you to stay in it 
. But one thing that really helped me was literally just doing the same thing. Getting with a bunch of girls. Because at the end of the day, I could no longer get upset at a future partner over something I did as well, and it helped me feel more secure at the end of the night. I know that gut wrenching pit in your stomach you’re talking about, and the sudden burst of anger at your partner that you can’t seem to control. Again, the only way I was able to kind of get over that was just getting out there and hooking up. Don’t make it a mission to hook up, but don’t pass up on opportunities just to save yourself for the next girl, because she’s not saving herself for you.
Yea youre right. Its super hypocritical to get upset at someone for something you did yourself. Ive hooked up a lot myself, but I still think these things… it makes me feel like shit. Like in my brain somehow my sexual past is different and hers is the only bad one.