I missed my period on the month of September. I usually get my period towards the ending of every month. However, I missed it in September & it's already October 28th and I still haven't gotten it, in which I usually get it around this time. Me & my boyfriend did have unprotected sex, though he says he didnt cum. A few days later after me and my boyfriend had sexual intercourse, I began to bleed, it wasn't my period bleed because I usually have it heavy the first few days and that bleed was extremely light. What does this mean ?