Implantation bleeding or period trying to start

Hi girls so I had unprotected sex the 6th and the 8th (it was stupid I know, but I had no way of getting condoms at the time, but I do have them now for the future) but when I had sex my period was supposed to come I think 3 or 4 days later maybe even less than that and I was three days late, but today I started light bleeding it’s started off like a couple of spots of blood when I wiped and then it got a tad bit heavier. I don’t have any discharge with it as far as I can tell, but when it first started it was like a dark pinkish and then tired to red it sorta filled a thin pad with brown blood it looked like (my period kinda looks like that in the beginning) but whenever I first start my period I start it while I’m asleep so when I wake up it’s pretty heavy the first day sometimes, but other times it can be a mild bleeding with dark brown blood, but it’s been awhile since I’ve started in the middle of the days so maybe that’s why it’s light. I started this bleeding roughly around 1 or 2pm and it is now 10:22 pm and it’s still pretty light. Do you all think it’s implantation bleeding or my period trying to start?