In the last year I have been so tired, well then my B12 was checked and now I get shotsd every month but it doesn't seem to help. I went to a naturalpath for an assessment and she told me that I had a very low thyroid and since them over the last 4 months boom I gained about 15 pounds out of the blue, no changes in eating....I don't know. Are there more detailed tests a doctor can do, because the natropath says on docs tests the thyroid usually comes out normal. So I am not sure do I have a problem, could it be contributing to my weight gain, and my fatigue. I have not been on any weight gaining meds, so I don't think that could be it. The only other thing I take /was a colon cleanse but thats it. That is because I am ever lucky if I go (sorry for been so rude), but its true. Drink water, eat fruit....yes yes, and it still doesn't happen. I workout and nothing. Why am I gaining weight??????