"I can say there is a "Yes" and "No" to it. When you have irregular periods the main problem is your ovulation. If you are ovulating regularly only you can become pregnant. But when you have irregular menstruation your ovulation cannot be marked or identified. Sometimes in irregular menstruation, you will have an ovulation that the girl or the woman won't ovulate. So when there is no ovulation there is no pregnancy. When there is irregular ovulation where you cannot point it out. By chance, if you have intercourse during the time of your ovulation then you can become pregnant. So the chances of becoming pregnant will be very very low when you have irregular cycles because we cannot predict your ovulation and anovulation is a most common finding in irregular periods. So when there is anovulation you cannot become pregnant. So when you have irregular periods and you want to conceive you have to first regularize your cycles you want to have ovulated cycles then only the pregnancy possibility is there"