Anybody had baby and had a radioactive iodine for high thyroid?

I am pregnant with my second ( 17 week ) and had a radio active iodine 2 years ago .Now i am on (leothyroxine) for low thyroid . I am very worry for my baby . I can't sleep i am always thinking that some thing will happen to baby because i had radioactive iodine . I just want to know if you had this treatment done and had a baby and baby is ok