IB or OB

I had sex 2 day after my period and he did cum inside of me. It’s been 2 weeks and I been feeling Bering nauseous, frequent peeing, Breast tenderness and cramping. And today I just experienced a mild amount of pinkinsh to brownish bleeding bit with small clots. I’m I going through IB !!? Supposed my ovulation days already passed can it still be OB ?