The condition you experience does not necessarily mean that it is something serious or irreparable. Many women experience changes in the length of the menstrual period and the color of the lost blood. Given the data you reported (brown spotting which lasts up to three weeks for two consecutive weeks), you might be experiencing a hormonal imbalance.


The birth control pills the doctor gave you probably contain female sex hormones that would try to regulate your menstrual cycle and induce a proper menstrual period. It might be necessary to take the pills for several periods to achieve the goal.


If it does not stop, additional tests and examinations by a gynecologist might be needed in order to find the reasons for your condition. The irregular levels of female sex hormones in the blood might be due to inadequate hormone production in the ovaries or in the pituitary gland. The age is not related to your condition. In the end, hormonal fluctuations might become a problem if a women wants to get pregnant. But it does not necessarily mean that she is infertile. It might only need medications that would help her to get pregnant and maintain the pregnancy.