<s>[INST] hello doctor,iam 29 and im 5'2.iam taking thyroxine since i have gone through thyrioditis and planning to become pregant.my menses periods were regular(28 days) b4 i took thyroxine.now my ovulation and menses are irregular..can i stop this medicine until i get pregnant or should i need to continue..? [/INST] Hi, I think you should continue taking thyroxine. First get a thyroid profile done.  Also as your periods are irregular, do a prolactin level and a ultrasound for your uterus and ovaries. You may need some medicines like clomiphene for the growth of your follicles and track your follicles growth by repeated ultrasound.  When follicles reach a size more than 17 to 18 mm, take injection for rupturing the follicles.  Be in contact with your husband for 2 to 3 days after injection.  Take progesterone for next 2 weeks.  Do a urine pregnancy test at home after that.  You can try like that for 3 to 6 months.  Hope I have answered your question.Regards Dr khushboo </s>