I have thyroid issues. Mine went wild then died. I had to have it removed 3 times. I've been on synthroid for 30 years. Lupus goes hand in hand with other AI diseases. the one for the thyroid is called Hashimoto's disease; with both it is hard to say where the symptoms apply. Fatigue will be your major problem until your count settles to a normal figure. Check in with an endocrenologist is my best advise. GP's are great but don't always prescribe the needed dosages.
Feel free to ask any questions and I'll do my best to answer.