Late Period after Losing Virginity.

i’m scared right now.

i lost my virginity on july 2 and had sex again one week later. it was protected sex too.

it’s now july 28 and i was supposed to get my period july 22. my periods are never late by this much.

i don’t know if i’m stressed maybe or what.. but i’m freaking out and don’t know if this is normal to have a late period after losing virginity or to be worried.

should i be concerned ?