Has anyone who is taking metformin WITHOUT any other fertility meds i.e. Clomid/Femara had late periods? This is the first month in four months I didn't take Femara or clomid with my metformin because my husband was out of town & we didn't see it necessary. Now I'm wondering if we messed up and I should've continued the other meds along with metformin because I am four days late..