Is it possible to have pregnancy symptoms 2 days after your cycle go off?? or could it b something else?

My cycle came on May 30th and went off on saturday june 4th. On the 6th I woke up feeling nauseated and hungry at the same time, and been feeling that way ever since.. Certain smells makes me sick to my stomach. I'm tired all the time. I go to the bathroom a lot and i don't be drinking that much to go to the bathroom that often. When i wake up in the middle of the night and first thing in the morning that's when i feel the nauseated and hungry feeling the most. Its kind of easy during the day.