Almost got drugged in public

So I was studying with this dude and like we were in a public place. And i had ordered food and was drinking iced tea. It was weird because i had heard a female say “he just slipped something in her drink”

i turned and looked at her but i was confused and went drinking my iced tea. I thought referencing another situation but after i left i continued drinking the iced tea and it felt like there was something in my drink i thought it was sugar on the bottom but i started feeling dizzy.

As i left i felt even dizzier But mostly tired. He made joke about me being tired because of the food. But it very sudden. I didn’t finish my drink. But i felt weird about the situation. Idk really know how to address it because im still not sure if something was in my drink or if im being paranoid.

I felt funny definitely. I was feeling very upbeat before i was eating. It didn’t feel right. I feel violated and im afraid to tell my friends because they might blame me for not paying attention.

I still have to meet with him tomorrow to finish the project I’ll make sire its in a public location and that i wont bring any drinks around him.

Im worried he may try to do something to me next time we meet. He’s 23 and im only 19. Should i ask him directly or should i ask my professor for a new partner? Im really small and he could easily take advantage if he had he opportunity.