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The problem with natural medical products is that even when they are useful, they are not in an exact dose which could be provided in the newly manufactured products. For instance, armor thyroid is extracted from porcine thyroid gland which contains both T4 and T3 usually in the biological ratio, but their concentration may vary depending on the type food of these animals are fed, especially iodine concentration in the food. This is the product responsible for your new symptoms, which are that of over replacement of thyroid hormone, and you did the right thing by having the dose.
But whether you are being over replaced or under replaced should be determined by periodic thyroid function test, if a single hormone, then TSH which shows amplified suppression and elevation of both T4 and T3 in hyper and hypothyroidism (here I presume, as you are being replaced, you initially was diagnosed as primary hypothyroidism, which is the most prevalent thyroid disorder). Serum TSH (thyroid-stimulating hormone from the pituitary) should be done four to six weeks to adjust the dose till the appropriate treatment has been settled, and then, every six months to one year. Manufactured proprietary tablets are more comfortable to change the dose with since they have exact dosage preparations, 25, 50, 100 or 150 micrograms, and they and they have only Levothyroxine (T4), no rapidly acting T3.
So, sudden alteration of biology is unlikely. The dose has to be adjusted by 25 to 50 micrograms each time. Carefully, half of that change for adjustment in heart disease and the elderly. Some essential clues (better confirm by TSH), under replacement (hypothyroidism) weight gain, coarse and dry skin, slow heart rate, constipation. Over replacement (hyperthyroidism) weight loss, sweaty warm skin, palpitation fast heart rate (tachyarrhythmia AF and sometimes heart failure), hyper defecation (increased number of stools) and sometimes diarrhea. As your symptoms are clearly from thyroid over replacement, I would not elaborate on other products. Though my general comment on natural products would apply. Moreover, growth hormone (GH) in excess may cause diabetes, hypertension, sometimes enlargement of organs and other musculoskeletal features. For the current problem, focus on the thyroid.