Question?????????

So I was almost two days late on my period. I had my period that night which is odd because I always have it in the morning. My period was super light and barely any cramping. I was even having pink discharge.(sorry I know gross). My periods usually last up to 5to 6 days. I'm on day 4 and it is brown spotting with a little bit of pink. I don't feel pregnant. I did before I had my period and I have been super nauseous, I can't eat, or can't look or even think of food. Nothing sounds good but I don't really have any other symptoms. Could I still be pregnant?