Red blood

I’m 4 weeks and 4 days. Since 5dpo I’ve had period like cramping and back aches. I got my positive at 14dpo the day I missed my period. It still feels like af is coming in hard core. I had sex last night at around 12am and now at 3pm I had the same cramps but when I went pee and wiped it had red blood. Is this my period coming?!