Thank you for your reply.
The good news is that you do not have any evidence of heart disease (shortness of breath, cough). Also, great to know that your blood work came back normal (which, I am assuming, checked for any kind of kidney problems).
Interestingly enough, your TSH is somewhat on the higher end of normal. TSH range is anywhere from 0.35 to 4.3 so as you can see, you are towards the higher range of normal. I think a small dose of Synthroid will actually give you some benefit in improving your fatigue levels. In the weight loss clinic that I work in, anyone with TSH over 3.0 gets treated. Interestingly, in my weight loss clinic we use Armour Thyroid, which is a different preparation of thyroid medicine that Synthroid. Armour Thyroid is an older medication and most doctors do not use it, however, we have had great results with it. It immediately improves energy levels, skin tone, helps with weight loss. Your doctor may not agree to give you Armour Thyroid, however, I would hope he can put you on a small dose of Synthroid.
The reason I am talking to you about starting thyroid medicine is because thyroid issues can definitely cause fatigue and sometimes swelling in the legs.
Also, there are about 10-15% of people (especially younger people) who have what is called "idiopathic edema" which means these edemas occur due to no known causes. However, before assuming idiopathic edema, I would suggest small dose thyroid treatment and an echocardiogram (ultrasound of the heart - just to be 100% sure that your heart is not involved which it probably wont).
I know this is a lot of information, so please feel free to follow-up with any additional questions you might have.
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