First, just because your doctor said you don't have thyroid issues, doesn't mean that you don't. You should go to http://www.stopthethyroidmadness.com
and read up. I, for instance, have a TSH of 4 without thyroid meds. Way back in 1994, I was diagnosed with fibromyalgia 'cause my TSH was in "range", the upper range being 5. It didn't matter that I had a lot of the symptoms. When the American Association of Clinical Endocrinologists (AACE) recommended the new range for TSH be .3-3.0, BAM!! suddenly I was hypo. Well no actually, I'd been hypothyroid, but untreated, for 10 years.
Janie's site has a list of recommended labwork that you should get. It's not the TSH that is important, unless you've got pituitary issues, rather the free T3, free T4, RT3 (determines if you have a conversion problem from T4 to T3), antibodies: anti tpo and tg ab to diagnose hashimotos thyroiditis, an thyroid autoimmune disorder. In addition, she recommends getting ferritin and b12 because if these aren't optimal (ferritin 60-70 for women and over 100 for men and b12 in upper 800's) then you're going to have conversion problems.
The problem with untreated hypothyroidism is that eventually the adrenals take a hit. When the adrenals are involved, it can cause conversion problems too so the T4 ends up going straight to RT3 and you start feeling worse and worse.
You're on the right track with the tyrosine, but you need to add selenium and Iodine
into the mix. Adding raw glandulars may or may not be a good idea. If its just the adrenal cortex and the adrenalin has been removed and if you are not a the early stages of adrenal fatigue where you have high cortisol. A 24hr saliva test will tell you what stage of adrenal fatigue you're in. If you start noticing the following while taking the glandulars: problems sleeping, insomnia gets worse -- waking every 1-2 hrs, then your cortisol is probably getting higher and you should cut back on the adrenal glandulars.
It would be a better idea to go back to the doctors and get all the labs that Janie recommends on her site and then go from there. If your FT4 is not at the mid range or higher and the FT3 is not at the top of range then you've got thyroid issues. If your RT3 is high, then look at your ferritin, b12 and antibodies.
Have you taken your basal temperature? If it's not 97.8 or higher then suspect thyroid issues. Take your temp starting 3 hrs after you wake and two more times three hours apart each day. Average those daily temps for a period of 5 days. If the temps vary more than .3 of a degree then you've got adrenal issues too.
PS...Don't forget to get your vitamin D levels tested too.
[EDIT: Once you get your labs and your doctor still tells you you're not hypo in spite of what you learn from Janie's website, it's time to find another doctor. She as a link on her site for ideas on finding a good doctor. You might find one by going to your pharmacist and asking for a list of doctors that prescribe armour or naturethroid. If you go to the armour thyroid site: http://www.armourthyroid.com/con_phLocator.aspx
you can punch in your zip code to get a list of armour friendly docs. If there aren't any in your area, widen the search. I travel 100 miles round trip to see my doctor, and it's worth it. Given the reformulation of armour and naturethroid, I'd bypass both and get a scriipt for Erfa Thyroid from Canada. The Canadian pharmacies (Universal Drugstore) have 800 numbers and will take your info over the phone. In some cases you can scan or fax the scriipt to them so they can get started on filling it and then drop the scriipt in the mail. When I order my thyroid meds from Canada, it takes about 10 days. But sometimes, it will get held up at customs and can take 30 days. Because of this, it's advised to order at least 3 months supply at a time and when you start on your 2nd month call and get your refill started.]