Anyone have attacks over things they find stupid? [Minor NSFW]

Today I was just talking to myself [thankfully I wasn't with someone else] about my relationship with my family [kinda just prepping for what i was going to say in therapy so i didnt go in and have nothing to say] and I was trying to describe what it was like when I overheard my mom having sex with her boyfriend as a kid and basically not getting any support from her afterward.

I started to describe it, to myself, and I ended up having a really, really bad panic attack. I don't know if it was a ptsd attack specifically [I dont know how that works] but I started seizing up and hyperventilating and just feeling really...scared? Alone? I dont know.

But it's just so stupid. I wasn't hurt. She wasn't hurt. No one was hurt. They're allowed to love eachother like that. Nothing happened to me. I didn't like it, obviously, but why was I having a fucking panic attack nearly a decade afterwards?

And I was trying to explain it to myself but it just made it worse

God I've got to work today too

I'm so tired