i took my 10yr old daughter to gp as she has a swelling at front of her throat.(goitre), on griday. the gp asked for her to have a blood test done om monday as he thought it could be her thyroids. we got the result back this morning and it shows she has a under active thyroid. hes phone the hospital and they say to done nothing for two weeks then take another test as shes not showing any other symtoms. is this right and what symtom am i surpost to look for. im so up set and worried pleade help.