My period is a week late! Could morning cramps mean i'm pregnant?

Hello, my name is Brittany and my period is a week late and for the last couple days I have been having morning cramps, they last throughout the day but are milder than in the morning. It was supposed to be on the 22nd, and its the 27th now and im a little worried. My BF used condoms a week and a half before my supposed period. Also, I take chlonedine three times a day and vitamins in the morning and at night. I have been under alot of stress due to tests and major papers due at school. Also, I don't have any signs of being pregnant, no swollen breasts, no vomiting or dizzy-ness or fatigue and i'm not bloated or swelling in my adominal area. Could it be that my period is late? Or could I pregnant?