guys how can I do ERP if sometimes I don't even have triggers? It's literally just my mind thinking about stuff without any warning or triggers? Like what am I supposed to expose myself to

Whenever I have a non flirtatious, friendly interaction with a male my brain accuses me of cheating. I go into a full panic attack until I tell my husband then it goes away Same thing with intrusive thoughts. I'll have a random sexual thought about someone and my brain tells me that since I thought that it must be what I wanted and accuses me of cheating. Sometimes these thoughts come with actually physical feelings of what intruded. Thoughts of "what would it be like .." but I stop myself and then freak the flip out. With erp am I just supposed to let the sexual thoughts or accusations play out in my head?! It's excruciatingly painful. Also if I sit there and give into a sexual thoughts paired with the "mood" feelings how is that not mentally cheating 😵‍💫

How long should I do ERP, so that my brain gets used to it, not to say tired?! I've been working for about three months, but everything still seems vivid in my head, there are even vulgar words in detail... since the sexual topic is both a groinal and a feeling that I want to touch myself. It's mostly related to faces and genitals, so how exactly can that go, if it's emphasized that sex pictures in themselves give that feeling, whoever is in them?

What would I do for ERP if my OCD says because I didn’t do something correctly or remember something I will have panic attacks that don’t end?