Metformin??

Vi

Hi so I failed both one hour and three hour. I was prescribed metformin but haven’t taken it yet because every time I check my blood it’s normal range so far fasting has been 91 and 94 and the rest of my numbers are in the 90s except for after dinner it’s like 131 and 134. I’ve called my doctor but he hasn’t called me back. I just worry if I take the meds my lvl will drop to low. Should I take it anyway or just wait till I see my doctor Friday?