I usually have a really abnormal period. One month it will come in 28 days, and another it will come in 35 and another is wont come at all. In September it was really late, so my boyfriend and I had sex. It was protected, but then he took off the condom after he had already cum. He assured me we were fine, but I didnt get a period at all, but I had a lot of discharge. I dont know if I could be pregnant or not, or if I just stressed myself out to the point of not getting a period.