Help I’m 15 day late... should I be worried?!?!😰

So I’m 17 and I just had sex for the first time ever with my boyfriend. We used a condom but when it was time for my period to come about a week and a half later it was a no show. After being 10 days late I took a pregnancy test bc I thought maybe the condom broke bc there was a air bubble in there or something but it came up negative (thank God). But I’m 15 days late now and my period still hasn’t come. Should I be worried or has this happened to anyone else after losing their virginity???