I had unprotected sex with my bf in oct. and ever since then I have been getting my perioud twice in month...at first didn't think nothing of it cause came in the beginning of the month and toward the end where is follows into the next month until I get it again in that month that it went it to...I just got my period on dec. 25th that just passed...now my period started again on the 15th of this month...It's been acting weird ever since i had unprotected sex coming on little often...but then again i have been under stress these passed months as well.......then again i been having headaches...lower back pain......feel nausa at times and wanting 2 eat like when i eat things it doesn't satisfyied me....I hope someone can answer my questions...thank you