Sorry to hijack this thread, but I am really intrigued by your comment as I am taking metformin for pcos and was when I conceived my DS over 4 years ago.
Does your endo advise to keep taking the metformin throughout pregnancy to prevent loss?
When I found out I was pregnant with my DS my midwife and ob-gyn didn't really know whether I should continue taking the metformin throughout pregnancy and told me to stop it immediately.