So...my mom thinks im on drugs...?

hey everyone so my mom has seen me drunk like 3 times and knows that i socially drink at parties sometimes. but thats ALL i do and only on occasion if i really want to let loose. i don't drink like every day maybe like 3 times a month? so today ive been in a bad mood cuz this guy ive been talking to upset me, so ive been standoffish today and going back and forth between being happy and then sulky again. my mom said my eyes are glassy (i have allergies damnit) and that i look like im on something (she says that whenever i take off my makeup) and then she insulted me by calling me a "loopylittledrugaddict" and im not. i refuse to smoke or take pills or try anything of that sort. and those 3 times she saw me drunk were like flukes i'm normally very responsible. she completely disapproves of me and how can i get her to stop seeing me as a screwup ?