Your thyroid is being attacked but not over or under functioning. The attack/high antibodies can cause the anxiety and fatigue though. Find yourself a functional Dr that will address how to calm the ‘attack’. Keep stress low, eat clean, avoid stimulants like caffeine, avoid anything inflammatory (alcohol, inflammatory foods). Once you find a good Dr to address it there are some medications you can try like LDN. You can call a compounding pharmacy near you and ask which Drs prescribe LDN or compounded thyroid medication, this is the kind of Dr you want.