Pregnant?

Kristina
I took two pregnancy tests two days ago in which they were both negative. And I got my period yesterday but it is an unusual flow and I have symptoms like I'm pregnant. I am nauseous, have a bit of a belly (which I never had), my boobs are bigger, my hips are sore and I am just slightly confused and not sure what to do or if I am.. any help/guesses/suggestions?