Someone please help.

I had my bleeding and cramping on my expected period. Maybe a little lighter than usual and took time to get a tiny bit heavier than usual. Mostly pink and brown blood. Well it lasted 4 days instead of 5 and now that the bleeding has stopped, I'm still achy cramping. And I'm constantly nauseous. Wtf is wrong with me. Yes I'm ttc. But I could've swore that was my period.

Anyone else have this happen ?