SUPPOSED TO START MY BC PILLS BUT MY PERIOD HASN’T COME YET...😕

So I just got birth control (the pill) for the time ever yesterday but honestly I think I might be pregnant...

I know sounds weird because the doctors did a urin test & blood test so that makes me clear right? Even if I had unprotected sex 5 days ago (which I told the doctors) I’m fine right because they did tests... so that makes me clear for being pregnant

The doctor told me to start my pills after my period... but my period was supposed to come yesterday but I still haven’t gotten it 😰 what should I do?

Sorry if this was all over lol