Hello! We have gotten pregnant while taking metformin (we had to do many IUI's and take other medications after learning i had a clotting disorder that was causing us trouble concieving and miscarrying, in addition to PCOS). We are almost 33 weeks pregnant currently, and i have been taking metformin the entire pregnancy- usually they take you off the metformin at around 12 weeks or so.. studies show that continuing the metformin when you have insulin resistance or PCOS does decrease your chances of miscarraiage. however i believe the studies show that coming off at 12 weeks is good, the benefits of it are done with at that time.. I started bleeding at 12 weeks, so we didnt want to "rock the boat" and come off of it since it was our 5th pregnancy (4 mc's) so i've stayed on it the whole time.. I have bad hyperemesis the whole pregnnacy - not sure if its caused by the metformin or not, but either way its SOOO worth it! : ) GOOD LUCK! oh and once you know you're pregnant i'd defintely call them and try to get in sooner - just for peace of mind if nothing else !: )
http://www.fertilityfriend.com/ttc/calendar_module.php?d=2009-09-10
Here is a link to my chart as of 9/9/09 let me know if you can see anything