Does Sore Breasts And Drowsiness Indicate Sign Of Pregnancy?

i had a period on sept 12, I then had unprotected sex sept.24 25 26 27. I then had a period on Oct 4 wich was a week early. The following week. My boobs became sore I been eating more craving fried rice and i am more sleepy. Could i be preg or am i jus getting ready for my period