Feeling drunk without drinking?

So I'm not sure how to explain this.

I'll be lying in bed watching TV or scrolling thru Fb, and suddenly the room starts spinning, and movements seem slow and almost like blurry trails? My head gets really hot (like, my brain. Inside my head)

The most simple and direct way I can explain it is like I just chugged a bottle of alcohol and it brain f*cked me all at once.

I Literally feel drunk.

And i have to stop scrolling thru Facebook (the motion makes me feel even more nauseous) and lay back and just focus on my breathing (with my eyes closed bc the room is spinning still) but then if I keep my eyes closed too long I can feel my heartbeat speed up like I'm gonna have a panic attack.

Note that I hardly drink; I do have anxiety, ptsd, depression etc but those can't be the basic reason for this because I know for the most part when any of those are the problem.

I thought maybe vertigo but I thought vertigo problems only happen when you're moving quickly, or stand up too fast or something.

This hits me out of nowhere, even/especially when I'm super calm and not moving at all

Idk what causes it.

It doesn't happen very often, just occasionally maybe once a month or something. But it happened again like two days ago so I thought I should ask about it

I can't go to a doctor- no money and no insurance.

Just looking for suggestions I can research to get an idea of the possible cause.

Eta, this feeling of drunkenness is Only in my head. It's not like my whole body feels drunk, just my brain.