Causes of prolonged menstrual bleeding (3 mos)? Cycle has been very light, brief (36-48 hrs) & rare (8-12 mos) for over 10 years. 32. No children.

Irregular periods. Having periods that are rare with sometimes several months between them may be a sign of polycystic ovarian syndrome aka (pcos) . On the other hand your current 3 months of bleeding require a proper work up. You should a complete blood count to check for anemia and an ultrasound to check for anatomical abnormalities. In short, it is time to see an obgyn.