I had my nexplanon removed on Wednesday 01-02-19, and the dr said to consider my self fertile, and to start prenatal vitamins, and i could also take the metformin. Long story short, January 2nd-and 3rd were my highest days to conceive, and i forgot to start the metformin. Should I wait till after the tww to start taking it, just Incase we actually did get pregnant without it. This is the first pregnancy we have planned, so I’m new to all this. The pregnancy with my son, just happened, we weren’t trying, nor preventing.