that might be something to do with it then. im usually around 13-15 in the morning, then i have 2 slices of brown bread toasted or a bowl of rice krispies and my 500mg metformin, 2 hours later my readings are about 18-20, if i dont eat anything from breakfast till 6pm my levels can go down to 11 but if i eat anything it goes back up to 18/19. i feel sick and dizzy all the time, when i wake up my hands and/or feet are numb but i dont know if thats symptoms or general worry thats causing it.