Pregnancy sick or sick sick?

K

Ugh I’m on vacation in the mountains, it’s out last day here so I know it isn’t the altitude. I threw up everything I ate or drank from when I woke up until 11:30 am. Took unisom and B6 as my doctor recommended before I left and I passed out for 3 hours and finally held down some water. Feeling better now. Feels exactly like a bad hangover from my past. Has anyone else had this experience or do you think maybe I was just sick from something else?