is this normal?

i’m 13 and i’m supposed to get my period today and i haven’t, i always get my periods in the morning but i had sex the 21st with a condom and almost had sex without a condom a few days before that like the 19th or around that but he didn’t go in he was just kinda “outside” but just kinda rubbing it if yk what i mean but could i be pregnant? or could me stressing about it be making it late? or sense the 21st was when i lost my virginity could it have messed up my ph?

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