First you need the right labs and diagnostics. The most important thing is to test your thyroid hormones by testing Free T3 and Free T4, and also your two antibodies. With your symptoms and the few and incomplete labs you've had, this looks like it might be Hashimoto's. A swollen thyroid is a goiter. A goiter is not normal. It means thyroid disease. After getting the correct thyroid labs, you'll also need to ultrasound your enlarged thyroid to make sure there is no cancer. Selenium or any other supplement won't fix this. If you are found to have Hashimoto's or you are hypothyroid, you'll be prescribed thyroid hormone replacement to address your symptoms and you'll feel much better.
The other thing is is that thyroid disease is not diagnosed on TSH. Your TSH is ideal, but the correct thyroid hormone labs are missing. The way that thyroid disease is diagnosed is by complete thyroid labs. When I was diagnosed with Hashimoto's, my TSH was about the same as yours. My FT3 and FT4 were low, and one of the two antibodies was very high. I did not have a detectable goiter, but the doctor felt my thyroid and said it was enlarged. I had got a thyroid ultrasound that showed nodules. I had them biopsied and they are not cancerous.
Hi friend, sorry to read of all your thyroid difficulties, I can certainly relate. I was feeling horrid, as my thyroid swelled with normal labs, unfortunately all test returned normal. But, my thyroid continued to swell for 5 years, to the size of a softball. I took my lab results, Xray, ultrasound, paid out of pocket, went out of town to Austin, to get a 2nd opinion, was told my thyroid needs to come out immediately.
One of the reasons, I was feeling super exhausted, my thyroid was wrapping around my trachea, crushing it, which caused short of breath during sleep, next day I woke up exhausted.
Low Vit D can cause severe muscle/joint aches, once I began Vit D, symptoms went away.
But, as all shared have much testing as possible, and if you can, get a 2nd opinion pertaining to thyroid. If your willing to travel, there are a few decent physicians/endo in central TX area. Wishing you well.
Take selenium supplement use cbc oil at health food store use turmeric n cucumin
I just sent you a PM with info. To access just click on your name and then from your personal page, click on messages.
By the way, I agree with Red_Star that it would be good to test for TPO ab and TG ab, along with the others I listed. Even though your TSH does not stand out as possible Hashi's, the fact that you mentioned a swollen thyroid is good reason for those tests. Also Vitamin D, B12 and ferritin are very important due to their effect on the body's response to thyroid hormone. So after testing you should supplement as needed to optimize. D should be at least 50 ng/mL, B12 in the upper part of its range and ferritin should be at least 100.
Two YouTube videos to check out:
Four Ways To Diagnose Hypothyroidism - Dr Hotze's Health and Wellness Solutions
Hypothyroidism Type 2 - Myxedema Symptoms
Tests I requested when I suspected Hashimoto's thyroiditis: TSH, free T3, free T4, thyroid peroxidase antibodies (TPOAb) and thyroglobulin antibodies (TgAb). Results showed both antibodies high and my TSH had risen into the 2 range (not my normal). In my case TSH took 4 years to rise to 6. No doctor would treat me until then. Smh.
You really need to start over and get the right tests done. If your doctor is like most he will ignore symptoms and just look at TSH and say that it is in the so-called "normal" range and that you don't have a thyroid problem. You need a good thyroid doctor. By that I don't necessarily mean an Endo, just a doctor that will evaluate mostly for symptoms of hypothyroidism and then run blood tests for Free T4 and Free T3 and the others, to confirm hypo symptoms. With all your symptoms, I expect that you will find that your FT4 and FT3 levels are consistent with the following info from an excellent thyroid doctor.
"The free T3 is not as helpful in untreated persons as the free T4 because in the light of a rather low FT4 the body will convert more T4 to T3 to maintain thyroid effect as well as is possible. So the person with a rather low FT4 and high-in-range FT3 may still be hypothyroid. However, if the FT4 is below 1.3 and the FT3 is also rather low, say below 3.4 (range 2 to 4.4 at LabCorp) then its likely that hypothyroidism is the cause of a person's symptoms."
If you are interested I know of a good doctor in the Houston area that has been recommended by two other Forum members.
In trying to assess a person for the possibility of hypothyroidism most important should always be an evaluation for symptoms that occur more frequently with hypothyroidism. You have a number that are frequently related to hypothyroidism. Next is evaluation of blood test results compared to reference ranges shown on the lab report. Unfortunately in your case you don't really have any test results that are useful. TSH is affected by so many things that it is useful as an indicator only when at extreme levels. Your T4 test is for Total T4. Most of the total T4 is bound to protein and thus rendered inactive. Only the very small portion not bound is biologically active. That small portion is called Free T4. The same goes for T3. For that reason you should always make sure they test for both Free T4 and Free T3 every time you go in for tests. T3 Uptake and FT Index are outdated and not very revealing. If your doctor ordered those tests then I suspect that the doctor is not up to date on thyroid diagnosis.
If possible I suggest that you go back and get tested for Free T4, Free T3, Reverse T3, cortisol, Vitamin D, B12 and ferritin. All are very important to help diagnose a possible hypothyroids patient. Do you think you can get those done? If you want to confirm what I have suggested, click on my name and then scroll down to my Journal and read at least the one page overview of a full paper on Diagnosis and Treatment of Hypothyroidism: A Patient's Perspective.