Hi Doc, I am experiencing a light menstruation for the past three days, I am irregular, I had my last menstruation last February 22, and lasted for 5 days it was just a normal menstruation not so heavy and not so light also. After that, I got my menstruation just last friday and it was so light. I had a protected sexual intercourse with my husband, and I had a pregnancy test and it turns out negative. I'm wondering what's happening with me. Can you help me what's the possibilities of these? and what should I do for my menstruation to become regular?