How do I do ERP? Do I just ignore the thoughts and go on like everything is normal, I feel so bad, why?

I’ve noticed that I’m somewhat happier also ignoring my thoughts than I am instead of doing compulsions (I’m sick and tired of being sick and tired atp) but I’ve heard you’re technically supposed to do erp rather than pushing under the rug. But idk if I have a thought I just refuse to think about it again and im fine even if I want to do compulsions

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 😵‍💫

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?