Glyburide

So I was diagnosed 2 weeks ago. All my numbers were great after eating but my fasting was a little high... averaging around 106. They put me on low dose Glyburide at night to help with my fasting, they are lower  (99,84,98,95) since taking it but today my breakfast and lunch numbers were super high for me (144 breakfast, 156 lunch). I have gotten 125 or less for lunch and always under 140 for breakfast for a 1 hr after for  testing time. My question is if the Glyburide could be causing an adverse effect? Anyone else experience anything like this? I am going to see what my numbers come back like tomorrow and then call over to them. I am so frustrated as I was doing much better on my own before the medication.