The exact cause of your irregular spotting and brown discharge can be determined only after I examine you clinically. In early stages
of pregnancy there may be discharge after the implantation of a fertilized egg into the uterine lining. Infections in the vagina, vaginal atrophy, cervical irritation, uterine polyps all can lead to brown discharge. Hormonal imbalances, ovulation disorders, thyroid hormone disorders are few other causes of spotting and irregular periods.