I regularly have issues with my low glucose alarm going off at night when my blood sugar levels are not low. Normally I have the low alarm set at 4.5 but have been in the habit of reducing this to a lower level at night because it is too disruptive to my sleep. A typical example is that it went off saying 3.9 which I doubted. A finger prick test said 6.4. I have heard theories about laying on the sensors and pressure affecting them but I have this problem when laying on my back so it is not likely to be pressure related. Generally it seems to happen most shortly after first falling asleep but can happen at other times too. If I take notice of the low reading and have some carbohydrate then later in the night the high glucose alarm will go off and I end up having to have a corrective insulin injection. Is it just me or is this a common problem? Is Dexcom any better than libre for giving accurate results? Has anyone out there any experience with this or helpful suggestions please?