I am still experimenting and learning how to "eat to my meter". Tonight I had a lollipop at 9pm. By 10pm, my BG had gone to 8.9. At 11:30pm it was 4.7, one of my lowest readings! I have been on Metformin for 2 weeks now, did that kick in? Anyone have an explanation? I didn't exercise or eat anything else. I did drink a glass of Nestea Splenda-sweetened drink at about 9pm as well.