My son current age is 5 months, at the time of his 2nd week of life, he got phototherapy for jaundice and also tested for his Thyroid, his T3 T4 values were normal but TSH was 12 uiuml(on 11th  day), doctor said no need to take medicine as it will come to normal in few days, so no further testing is done.. his mother is taking thyronorm 25mcg before delivery and resumed one month after delivery... Now He is 5 months and 5.15 kgs of weight... taking normal feeding, no illness observed so far....he looks healthy and active. kindly suggest if we still need to concern about Thyroid problem.