Any idea?

I woke up feeling drunk/hungover yesterday. The problem is i dont drink. I have only ever drank like a total of three different times, because im just not a fan of how it makes me feel. I got home from work around 7am and immediately passed out, which is strange for me since i typically am up until about 2pm. I woke up around 9:30am though feeling awful, and not being about to go back to sleep. I didnt fall back to sleep until 8:30pm.

I woke up and everything felt like it was spinning and moving. I felt nauseous, but never actually threw up. I was so dizzy and unbalanced. My whole body was aching, not feeling like i was sick, just hungover. My head was pounding.

If i sat down and closed my eye i felt like i was floating. I didnt have a fever.

Today im feeling fine though.

Does anyone have any idea what could have caused that?