Tested too soon..?

I took a pregnancy test the day my period was suppose to start and it was negative. I started bleeding later that night but it wasn't like my normal period. I didn't think anything of it though because periods do change & I just assumed that's what was happening. But I'm so nauseous every morning and before I go to bed. Certain smells make me so sick and I have to pee all the time and my boobs hurt all day. Is it possible I tested too early?