Think i got roofied (not sure how to spell it)

Im engaged but went to chill with a guy I meet on an app not dating app just friends. My fiance trust me and I already told the guy nothing was gonna happen!! I had two or three beers. Started feeling dizzy, then don't remember anything after that till the next morning. I'm scared he raped me but don't wanna get the cops involved Cuz I don't want my mom to know. I'm 26 years old. Help me plz. How can I deal with this??