I've had unpretected sex with my fiancé before my period and my period ended up coming early I took 2 pregnancy test and they were both negative could I still be pregnant Cus I've been feeling nauseous and throwing up also over eating Some help :(

If you had your period then it's unlikely you're pregnant. However there is still a small possibility. I don't know how far along you'd be, especially since you would have had to of ovulated very late in your cycle, but if your period happened very recently it's unlikely the nausea is caused by pregnancy. Early pregnancy symptoms, the ones that can happen before implantion (which usually takes 12 days or longer after the egg is fertilized, which can take days as well) are caused by a flux in hormones. Nausea isn't one of them. Perhaps there is something else causing your symptoms. If you do miss your next period, or it's been a plausible time for implantion to have happened, I would take a hpt. And there's always the option of getting a blood test done.