Had the libre 2 sensor in for a 4 days I’ve always run high blood sugars today the sensor went to 4.7 and my finger prick tester was at 19.9 I’ve never in 7 years been under 7 I did test if my sensor and finger prick were simalar readings on 1 st and 2 cnd day they were virtually the same . So I’ve tested my finger prick tester with another one I’ve got they both said 19.9 but still my sensor is about 5 which one is right as I’m a bit confused