I had an unprotected sex with my boyfriend 2 month ago. My last menses was a month ago. Could i be pregnant ? My menses comes 1 week late for the month meaning for the month of october it'll come in 1-2 week of november. I do have a recent 3 month missed period due to stress. Should i be worried about this or no? But before that late menses, my menses would always be every end of the month. After that it change routine..