I starved myself from 9pm last night to go for a blood test (under active thyroid) have been trying since January! The cold and windy weather is not good for me so I have put it off. Today I got in the car, drove down the road and then had to pull over as I could not get my breath. 10 mins later I just came home again. Feeling rotten all day and cold which is a sign that the thyroid needs are too low. Have to try for blood test next week!