TMI!!!!!!TMI‼️‼️

I have been off my period for about a week now. Yes. Like a day or two before it ended I had sex and he came in me. I am cramping and it feels like my period might begin again. Just to let y’all know I am 7 months PP. I go to the bathroom and I wipe and see this. Can my period come again that soon? My period lasted 6 days and this never happened before