Implantation spotting?!

I’m 8 dpo today & I had sex after I had 3 days of light cramping about 2 days ago & it’s been about 3 hours since me and my SO did the deed. Is just from sex or could it have triggered my implantation bleeding? Or 😒 idk when I wipe nothing comes up either. I get my period in a week last period I started spotting 5 days before but didn’t quit look like this. I’d say I spotted dark brown red to bright red and it got heavier the day of my period. I’ve had faint positives on pregnancy tests but they were barley visible 😏 anyone got any good advice, any similar stories?