The sensor did not work. When I took it off It turned out to be the filament which was somehow taken back up by the needle. The filament seems to have entered my skin but was than taken back up.
My precious sensor, which I took off after 3 days because it hurted (think it was close to a muscle) was also no succes. It gave good values but it hurted. So I took it off. And now 2 days later the spot were the sensor used to be still hurts and is kind of swollen. It's the first time I have an experience like this after using about approximately 40 sensors. Had some minor skin reactions before or sensors which worked not well, but nothing like this..