Hello Maria, Thanks for writing in. Irregular menstrual bleeding is common in mothers who are feeding their children. It occurs due to the hormonal changes that occur during this period. This leads to anovulatory cycles during which bleeding is irregular. This would particularly be prominent if you have been receiving progesterone only pills ( a common contraceptive used in the lactational period). I would consider this as the main cause of your problem. Nothing needs to be done as such to treat it and it should become ok on its own. However, in order to rule out any other problem, I would suggest that you get an ultrasound of the pelvis done. This will allow us to have a look at the uterus and the ovaries and rule out any other problem. Please consult your treating physician for the same. Regards