Spotting after the period can be considered as metrorrhagia or prolonged menstruation (menorrhagia). Spotting can be due to organic or functional reasons. Organic reasons include: infection, tumor (polyp, cancer), injury, endometriosis, foreign body etc. Functional bleeding is due to a hormonal misbalance in the axis hypothalamus-pituitary-ovaries. There is nothing you can do but to consult your gynecologist. A vaginal examination, ultrasound scan, Pap-test, etc can be done to find out the reason for the bleeding.