Hi, ladies. My bloods finally came back; I have an under active thyroid. They tested just over 3 years ago and it was not showing and now it is. Doctor says my irregular cycles will possibly be as a result, but they want me to have bloods to test for PCOS when AF finally turns up. Day 68. Grrr. Just wondered if anyone else has this and how long after thyroxine started their cycles settled, if at all? Least the last few years now make sense and it can be controlled now.