Suggest Treatment For Difficulty In Getting Pregnant

ive been having trouble getting pregnant I was hyperthyroid I received radioactive iodine back in September of 2012 . I am now hypothyroid and my levels are soaring above 20.3 tsh . Im wondering if the difficulties im having have anything to do with my tsh level .I was placed on a higher dosage of Synthroid which is 125mg and im hoping that will help?