Anti-anxiety meds, for one thing. ;)
You need to tell us a little more about what you know.
Do you know what tests were run and what the results were?
Did your doctor perscribe meds?
What vitamins and supplements do you take now?
Is the stress from the diagnosis, the illness, or your lifestyle?
SPILL THE BEANS!!
Then we will share. :)
If you have hypothyroidism, doctor should write you prescription for thyroid hormone replacement supplement. You should follow the druggist instructions that are on the bottle and the pamphlet instructions which comes with it. Then minimum of 6 weeks to maximum of 12 weeks after starting the meds. go back to doctors for retest.
Good luck