I have just had a stomach bug which meant I was unable to eat or keep fluids down and have to say was slightly panicked as first time I've experienced since being diagnosed 13 yrs ago (T1). Read through all the 'sick day' rules I could find & found most sadly lacking if unable to eat. Eventually decided to take Basal insulin slightly reduced (worrying about being able to treat any hypo) and although took normal bolus on first morning as BG level appeared to be climbing, I then only gave more bolus once able to eat half a slice of toast. Rewarded this morning by feeling on the mend and a BG of 5.2. I did test frequently and try to keep sipping water. Amazed & relieved.