Missed period

Hi guys! Well I missed my period this month I suppose to get it a week ago according to eve, I didn't wanted to worry and waited till the 28 cause I usually get it by them but it hasn't come yet and I'm starting to worry. I recently got an UTI and I took my antibiotics and according to my doctor I'm good but idk why my period hasn't arrived yet. I need answers idk what to do :c