Thanks everyone!
The doc did mention thyroid, and they took a few little bottles of blood so not sure what they were testing.
Fern, you are right, google can be dangerous, and I know I am guilty of googling everything, and sometimes worry for nothing.
Rosie, thank you. I have been a little more thirsty lately but that's about it, and it could be nothing!
Fungirls, when I e-mailed SW they said you could change your target by only a few pounds but only if you are within the healthy BMI range. I have already changed twice and am not sure if I can again.