I have irregular periods since the beginning(2009 -). Recently I got to know I have thyroid problem and taking thyronorm for it. I went to a doctor for my irregular periods problem and doctor asked me to take meprate tablet twice a day for 5 days and whenever I get my periods after this take novelon from the very first of the periods. I started taking but my periods stopped after 2 days. Now I want to know what should I do in this situation. Should I continue taking novelon which 21 days course or I should stop it? If I have to continue how many kits shall I take to get back my normal periods as doctor has asked me to take another course of novelon after 7 days of completing first kit of novelon.