Thyroid

Hello ladies the questions is for women who've experienced miscarriages. I went to my dr because I've had yest taken since my D and C and the dr said the reason for so many MC'S is my thyroid. And also he said thete may be some type of mutation it's something like homozygousitis but it'd not "homo" it's something maybe yall can help me remember. Have any of you had this be the reason for your losses? If so what steps did the dr have you take? And he also told me that when my husband and I attempt to try again just start taking baby asprin. Not just how that will help!! All my husband and I want is a family but not sure what's going on