... prescribed provera to take for 3 months in a row to take from the 16th day for 10 days each cycle. He also said I have PCOS.The first two months I started my cycle on the 27th day. The third month I started my cycle on the 24th day. Now its been 38 days and no cycle. I also put on 15 pounds during that 3 month time of taking Provera. It is now the 38th day and no period yet. I had a tubal ligation 19 years ago. Should I worry at all about pregnancy? What would the odds be of that? I am perimenopausal. The only other times I have been this late I was pregnant but I don't believe thats the case now but who knows. What should I do?