sos please !!!!!! 😩

okay so im 16 and i recently just lost my virginity to my boyfriend. the day i lost it i was supposed to start my period (thursday the 27th) and it’s now sunday (the 30th) and my period still hasn’t come 😩. we used a condom and since i was supposed to be on my period that day, the chance of me getting pregnant was already unlikely but im really starting to be worried😩😩. please someone help ! im usually 1-2 days late every period i have but idk it’s going on 4 days now ..