so i’m stressing out and want to know what other people think

i’ve been on birth control for 3-4 months. last month my period started a week before my sugar pills. this month i started the sugar pills three days ago. and i’ve still not started my period.

i don’t think i’m pregnant because i’ve been using condoms, him pulling out, and i’ve only missed one day of the pill.

is it normal to not start the first day of the sugar pills? or did anyone not have a period on the pill? and does anyone think i should be worried about being pregnant?