My son of 6 months snores when he breaths sometimes. I have administered cough medicine and actified on him 3 times but after the snoring persists. The doctor said we should do a nose x-ray to ascertain if there is a blockage in the nose or in goitre. But another doctor said that an xray is not good for him at this stage. That he may outgrow it. Please, is it safe for an xray at this age?