Finally a positive opk

Pretty sure yesterday I had a positive opk? So the day before we bd in the morning and also last night too.

For how long before and after a positive opk are you fertile?

I forgot the temp this week so can't confirm from that..

If been taking metformin 1000mg a day for one week now. Hoping to up to 1500mg but should I wait till after the tww to up it and only do so if I get a bfn?

Excited and hope the metformin works as there is a 9 month waiting list to see a specialist!!!!

Baby dust to all xx