Hi i am abreast cancer survivor..i am er pr -ve and her2 +ve.completed herceptin in july2014.restarted periods in sept 2014.they hav been coming at agap of 2 -3 monthsand last two were heavy and lasted 15 days.after all tests like usg my doc had put me on primolut n for 21 days and after 2 days i got my periods.they say it should last for 5 to 6 days or else injections or uterus removal will b considered.i also have hypothyroidism discovered in jan this year..tsh was 43...then7 and now3.3