My girlfriend has PCOS and irregular periods. We had unprotected sex two months back when she took Regestrone CR 15 mg tablet, and she got her period within three days. She underwent an hCG blood report last month, and the report was 0.10, and she did a pregnancy test and got one deep and one faint line, then after a few days, she got a full negative report. What should she do now? Is she pregnant because she has did not get her period yet?