Could I be pregnant?

I stopped taking the pill the day before I got my last period. I got my last period on Jan.27th. I haven't gotten my period yet. I'm constipated, nausea for about 4 days now, feel a little crampy & bloated, but I don't feel like I'm getting my period. I've had the hiccups alot lately too, but havent' been eating much due to nausea.
Could i be pregnant?