Absolutely — but hyperthyroidism (an overactive thyroid gland) and hypothyroidism (an underactive thyroid gland) can have a negative effect on fertility and make conception more challenging. That’s because both conditions have been linked to irregular menstrual cycles.

Sorry to see nobody answered your question yet !
Once you are taking medication (levothyroxine tablets) and your thyroid hormone levels are back to normal your chances of becoming pregnant should improve dramatically. If you are planning a pregnancy you should let your doctor know and ideally have a blood test before you conceive