In my opinion, if your blood sugar has been all over the place, like a yo-yo, you probably felt like it was lower than it was just because your body is all out of whack. I think once you're feeling 100% and back on your routine, you will feel fine when you're at normal blood sugar levels. I think the fact that you can get to a normal level of 108, you may not need to go back on the metformin, at least just yet - but the sinus infection is/was making the blood sugar crazy! This is something you have to discuss with the doctor. Poor thing! (And don't forget to change your towels and sheets, especially your pillowcase, so you don't re-infect yourself. I know I wrote that before but I'm a mom and that's what moms do, repeat ourselves, right?)