We just started using the Dexcom last night and I've had a couple questions pop up. I tried looking it up on the forums but I wasn't really getting anywhere. 1. The more often you enter finger stick readings - does that make the sensor more accurate? For example, you have to calibrate it every 12 hours so if I am entering a BG reading every 4 hours does that make the readings more accurate? 2. My son sleeps on his stomach - sensor is on his stomach. He was reading HIGH on CGM in the middle of the night but his finger stick was 296. I figure the higher and or lower the reading the less accurate it will be but does the pressure of sleeping on it mess it up too? 3. I know he has some nasty spikes after breakfast. If I set the high alert it will go off all the time. What do you have set for your high alerts and low alerts? 4. Is the 5ft limit between receiver and transmitter really 5ft? I had the receiver on the dresser less than 5 ft away last night and it got out of range. Thanks!