Thanks ladies, you have been a great help. My nurse rang today to say to stay on the metformin until my 7wk scan and then we'll discuss it with my FS. But now I'll be adamant to stay on it, at least for the firs trimester. Thanks again ladies!
Butterfly warrior- no i don't have a family history of auto-immune disorders so fingers crossed it's an adequate dose. thanks for your advice-much appreciated.