Hi I had sex with my Girlfriend Jan 4 2014, her last day of menstruation bleeding was Dec 5, 2013. she said she was expecting her period around January 5, 2014 onwards. She is delayed now and its January 15 she still dont have her period. I remember she told me she had brownish vaginal discharge a few days which lasted I think for about 4 days they are On and Off not very consistent, she had some headaches 2 to 3 days after we had sex. she also felt a bit dizzy. no sore boobs, but last Jan 11 she had i think mild cramps. and acne burts out in her face. She had a PCOS and stop taking pills around august 2013. she said she had brown discharge before her period. and from september 2013 to november 2013 she had almost regular periods. before she had irregulars. what are the chances that she is pregnant?