My boyfriend and I had sex twice this month, protected, and nothing happened, it was the same as all the times before, but i was suppose to start my period 3 days ago and i have not, its not unusual for my period to be 1-2 days late but its going on to 3-4, i don't know if its me panicking or stressing out that could be the factor, because i do not feel fatigue, or sore breast, but its concerning me, could i be pregnant?