[rant]Lo and behold, I can't get in touch with DSN.
I phoned Medtronic and they said if I take this sensor out and wait a few days before inserting another, the battery in the transmitter should be okay to begin with, but they couldn't guarantee it. They said the average life of the battery is 14 days. So 6 days with this sensor, 2 days without, and 6 days with another at the most. So the 3rd sensor I have will probably be useless because the transmitter will likely die before I can insert it.
I think the reason my DSN kept the charger was so that I couldn't just run off with the transmitter, seeing as it's so expensive. I got the impression she did that with everyone who borrowed a transmitter. And this is an area of Scotland with good funding for diabetes care.
I don't want to waste a sensor on this weekend. I really wanted the CGM for when I go back to work for peace of mind (I did tell DSN that, but she slapped it on me there and then anyway). I think I'll take my chances and wait until Sunday for the next sensor. The combination of the sensor and the tegaderm are making the skin on my stomach really itchy, so it would be nice to have a break from wearing it.
In all honesty, I can't wait to pull this thing out! It's getting really quite uncomfortable, and the results it's giving me are way off. I seemed to get 2, maybe 3, days of accurate results out of the sensor. Now it's starting to annoy me because a) when I download to Carelink it will be a lot of rubbish and b) it keeps buzzing at me - this morning in the shower I got "lost sensor", and I got another callibration error earlier. [/rant]
Again, I am coming to the conclusion that I need to win the lottery 🙂