bleeding after losing virginity/scared it might be implantation bleeding?

i lost my virginity about 7 days ago. i bled afterwards and about 1-2 days after as well (i think he went a bit too hard as well as probably tearing my hymen) the bleeding stopped but now 7 days later i am having period cramps and bleeding somewhat heavily. my period is not supposed to come for another week. he wore a condom the whole time and didn’t finish anyway as i was in pain so we stopped. i know this seems dumb but of course i got myself in a google-hole and am now terrified this may have been implantation bleeding? possibly from pre-cum as that would be the only explanation? it seems too heavy as i had to use a tampon but it is not AS heavy as my first day usually is. just a little concerned and wondering if anyone else had any insight. thanks :-)