Hello, I would be happy to help you with your question.
typically is not associated with irregular cycles. There are other common causes of irregular cycles of which you are probably aware. It sounds like you do not ovulate regularly (and thus the irregular cycles). This can be associated with a small amount of breakthrough bleeding
that can make its way out as a brownish discharge. Other causes of discharge include infections, such as 'BV'. Given that you are not cycling regularly, and you might have a vaginal infection
, and your goal is conception, it would be worth meeting with your doctor to address the potential issues. This is your best path to pregnancy!
I hope that this helps and good luck!