You did not specify what medication you are taking for your thyroid
problem, whether you are hypothyroid or hyperthyroid. Also, you did not say if you are trying for conception with any medical aid. Hypothyroid states are better treated as conception with a defective hormone state may lead to several complications if pregnancy
occurs. There is no harm in continuing medication even after conception, in fact, it is useful. Hope your query is clarified. Good luck.