I am approximately 2-3 weeks late for my period. I am usually very regular; I've been late for a week or two before but I can generally count on my period coming at a certain time. The difference between then and now is that I have been sexually active, therefore increasing my chances of becoming pregnant. My partner ALWAYS uses a condom with spermicide and pulls out well before he finishes. So I became concerned after missing my period and started doing some research into whether I could be pregnant.??