Missy, it's very hard to bring BG down as a T2 without more insulin.
There are two main ways to do this for a T2: Medications that stimulate insulin production by the pancreas, or directly taking external insulin.
Metformin alone does not stimulate insulin production. Instead, it supresses release of glucose in the blood by the liver, taking some of the pressure off the system overall to clear sugar from the blood, and by increasing sensitivity to insulin and therefore its effectiveness.
This very often isn't enough, however, for many T2s. Also, when BG is elevated, it doesn't really help much to get it down.
Absent one of the insulin stimulating meds like sufonylureas, your only option when your BG is high is to eliminate carbs from what your eating temporarily, and try and get as much cardio physical activity going as you can.
With these measures if you still run high BG, you need discuss some additional medications, or perhaps exogenous insulin, with your doctor.