Bleeding after sex right after period ends

D

I stopped bleeding about mid-day, the last day of my cycle & was fine until I had sex the next morning , which then led me to lightly bleed for a few hours, stopped again but i had sex again last night which caused more bleeding. nothing that a panty liner can’t handle but I don’t understand if this is still my period or what? its not heavy at all, but while ttc its hard to know if im off my cycle & should start my opk tests or wait more. just don’t wanna miss my day.