Late period???


So I feel like an idiot about this to be asking but my period is 5 days late. And I’m worried I might get pregnant again since I’m a mom already but last time I got pregnant I never tried to track my period. But now I am and I’m worried about it. It’s been late before but I had sex with my husband on a bad day on accident.

How long do I wait till I take a test? Like when would be the best time to take one?