#AskSaurabh Hi

I have hypothyroidism. After delivery doc prescribed me to take eltroxin 50 mcg. I had hypothyroidism before and during pregnancy too. Post delivery on 7th week, my TSH and hemoglobin test were done which were normal and I am continue taking 50mcg. My questions-How frequently or at what intervals this test to be done and how long I have to take this medicine?
Thanks