Getting pregnate with upped dosage of metformin?

S
I've recently had my Metformin bumped up to the highest dose(I forget what it is) has anyone gotten pregnate after being on met for 3 months then having your dosage increased? I have to wait another three months to make a year that we have been TTC before insurance will Cover an apt with a fertility doctor.  I'm really hoping this increased dosage of metformin will do the trick but i feel so discouraged lately and just feel so sad and alone.  I havnt had a period since November.