I had an incredibly similar experience where I suspected I may have been drugged my first day of university, but also may have just been alcohol.

Blacked out drinking at my friend’s party. Woke up, girl under my arm saying ‘just take tops off, keep pants on’ black out again. Come to for 1 second in my bed taking pants off. Black out again. Vaguely remember walking into my neighbor’s room (open door policy), black out again. Vaguely remember running down the hallway screaming I need detox.

Wake up in the hospital, IV etc.