I think I have been quoted every statistic there is with relation to PCOS and MC. Anyway I started on Metformin in May, was pregnant by July. I was told to stop the Metformin as not enough tests had been done on babies who were born whilst their mothers took Metformin. Unfortunately I had a MC in Sept. I am now back on Metformin, and this time have been told if I become preganant again to stay on the Metformin for at least the first 12 weeks, to try to reduce the chance of another MC. Anyway all I can say is it is all very confusing, and I am not sure that even the doctors know all of the answers or statistsics!