Hello. I Just Received My Blood Tests Back That Shows

Hello. I just received my blood tests back that shows my TSH as less than 0.01, way out of range. Meanwhile, i have T4, free of 1.31 and T3, free of 3.7, both in normal range. I have been on Armour prescription to treat my low thyroid for two years, but my TSH has continued to drop despite increasing dosages of Armour and I-Throid supplements. What does this mean? Thanks so much for your help!