I have not had a period in two years due to PCOS. I Started taking birthcontrol the same time i started taking metformin Which was Tuesday the 5th. The metformin was 500mg for ten days. On the next tuesday i stopped taking the birthcontrol. On Thursday the 14th I started spotting and friday I began taking 1000mg of Metformin. Today, Monday the 18th ,I started my full on period... Could it be the Metformin? And if so is it going to enhance my chances of concieving?