Hi. My wife had some problems with her period. She told me that her periods became irregular after our marriage. So I decided to ask here some questions because I’m too embarrassed to ask about someone else. I know nothing about women’s periods. It started about half a year ago and recently she told me that her period is more than 50 days now. We had an unprotected sex and after some weeks she finally had her period so I assume that she is not pregnant. Can somebody tell me what the problem could be? Why this is happening to her? Could this be caused by stress?