felt more drunk with less to drink

so i went out this weekend. on friday i had A LOT to drink, but i was fine in the morning besides my blood sugar being very low. but Saturday night i drank much less but ended up feeling more fucked up and was dry heaving a lot. i felt fine again in the morning. but im just confused on how that can happen? the bars we went to are definitely heavy pourers, but thats why i ordered less on Saturday. i didnt even pregame saturday, but i did on friday im really not sure why i felt that way? i ate and drank water both days (reason for no hangover), but it was just super weird for saturday. i think i blacked out? theres a lot i cant remember that night besides one guy groping me on the dance floor (im a male and we went to gay bars) and also a guy trying to get me to take meth as i was dry heaving. was that a black out? or was i close 😆 i cant tell. if anyone has advice to prevent this from happening again that would be awesome im also going to get tested for diabetes soon too, so maybe that could be a cause of it