Freaking out

Ok so me and my boyfriend have been together for almost 14 months and we've had sex quite a bit. We have always done it safely with a condom and the one time it broke we went immediately and got the plan B pill. We've had sex a little bit since then and nothing has happened to the condom but I'm now 41 days late for my period. Could I be pregnant? Or could it be stress related with starting college and my change in eating and sleep habits? I've had experience with my period being wacky due to stress and changes in workouts and eating but never really this long. I'm really freaking out and could use any advice or anything that anyone has. Thank you!