 [ Symptoms ] husband had vasectomy w2 neg samples period is late can vas reconnect w2 neg samples post op  age 32  three natural pregnancies no fertility issues rather we always got pregnant very fast    i do have irregular periods but i put the dates of my last three periods into the ovulation calculator and based on those dates my period is three days late    i keep having symptoms of a period but then it does not come [ Disease ] radioactive iodine rai is often chosen for treatment of conditions associated with overactive thyroid including hyperthyroidism and thyroid cancers rai treatment is based on the fact that the thyroid actively accumulates iodine which it uses to produce thyroid hormones required for normal body function the therapeutic action of rai is via disruption of the function of the thyroid cells   the more radioactive iodine given the more cells cease to function as the cells stop functioning excessive amounts of thyroid hormones are no longer produced and symptoms of hyperthyroidism begin to disappear in your case the side effects of such therapy will be limited to short term effects like sore throat nausea fatigue etc there will be no effect on other organs like kidneys nor any effect on the sexual desire and sexual function but once the treatment is completed you will need lifelong therapy with thyroxine supplements to prevent hypothyroidism related symptoms