One sympton I noticed almost right away (besides the weight gain) was a kind of scratchy thoat. Thats very common with hypothyroidism. I gained 40lbs last year when I went from hyper to hypo and had no idea what was happening. I should have known. Now I'm dieting and exercising to try and lose those pounds. My doctor told me that as long as I'm Hypo I would not be able to lose no matter what I did because of my thyroid. I was also hot flashy, tired, confused, having anxiety attacks, and my doctor said that depression will set in if you don't get the thyroid up. He said depression goes hand in hand with hypothyroidism. It was awful and it took a long time to get regulated, but now finally I am and I am starting to lose weight. Strange thing though while I was hypo I could eat most anything and it didn't bother my IBS. Now that I'm regulated again I'm having all kinds of problems with the IBS. I don't understand it.