Suggest Treatment To Postpone Menstrual Cycle

HI there. I had a question. I need to delay my monthly period for a week. I have irregular cycles. sometimes on time and sometime late. I was trying to see if I'll be able to use norethisterone for that purpose. I am not in any kind of counterceptive pills. and lastly I would like to know if it will not interfere my medications that I use for my seizures. I use lamictal. can you please help me with that