Have you tested Tasha? If not, I would. I too am taking Metformin, and have not gotten my period since 5/8/2012. I am way late. I have a 28 day cycle. I've had odd things happen like having ovulation strips show really bright positive on day 31 and 32 of my cycle. I also had two weird hpt's. I have since went to my RE who performed a blood pregnancy test today. If I were you hon, I would test, and visit my obgyn, or RE. Good luck, and baby dust!