If your periods are irregular it is usually a sign of anovulation. Your ovulation may not be happening or may be very erratic. It would be best to see an infertility specialist for evaluation and do blood tests and ultrasound to rule out any hormonal disorder and get treated for the same.

Hi there, fundamentally bleeding of period starts after 14days of ovulation. Now three things if you observe ,you can pinpoint ovulation. 1, daily measurement of body temperature at same time at rest, at the time of ovulation it will rise by half digree feranhat and it remains so if you conceive, otherwise drops down to basic in few days. 2, watery but sticky discharge, which also stops if you do not conceive, otherwise increases.3, pain on side of ovum in lower abdomen, perfect time of ovulation.