Thank you for stating your concerns Irregular periods usually come from unbalanced hormone levels which often result in lack of menstrual periods or reduced and prolonged cycles, there are several probable cause for this but the best way to determine first it s with a wide clinical history and also proper measurement of current blood levels of the hormones LH and FSH, also an ultrasound may be necessary to discard ovary cysts, with this information proper adjustment of your cycles can be achieved either with supplemental hormone therapy or even by changing birth control methods. My best recommendation would be to discuss this with your OBGYN so you can achieve your objetive. If you have any more questions feel free to ask. Best Regards Dr. Aguilera