Perhaps the most immediate way to improve your chances of getting pregnant is by determining when you ovulate. While ovulation calendars and the like will not have any value for women who do not ovulate at roughly the same time each month, and who don't have a regular menstrual cycle at all, what will help you are ovulation tests.
Ovulation tests, which are also known as ovulation predicting kits sometimes, are urine tests. They will turn up positive when they detect the luteinizing hormone (LH), something that is exclusively present during ovulation. For women who have irregular periods, taking ovulation tests all month from the time their menstruation ends to the day the test is positive is the approach that offers the highest chance of actually offering correct information by catching your ovulation!
One thing to keep in mind before you take the simple step of doing ovulation tests is that irregular periods can be caused by many things, including medical problems that may interfere with your ability to get pregnant, stay pregnant, or have a healthy pregnancy. Some of these include uterine fibroids, hormonal imbalances, and Pelvic Inflammatory Disease.
Before you look into how to get pregnant with irregular periods, we strongly advise you to seek medical attention to see whether you can find out the cause behind your irregular menstrual cycles before you actively start trying for a baby. You may find the cause is something you can easily resolve, which would make getting pregnant easier. Or you may find that you need specific medical treatment, which may not be compatible with immediate pregnancy.