Drinking on day period is due but hasn't shown up

Tia

So I've been trying for a few years at this point. Only been late a handful of times but resulted in period coming. Period was due yesterday but haven't tested (over testing I cut myself off). Meant to be having a girls night and idk if I should drink or not? I was late by two days last cycle so I know it's possible she is just running behind. So just wondering if after all this time it's worth holding of the glass for tonight?