Thanks for the query.
There is possibility of hormonal
Because of that you may be getting continuous spotting.
Better to consult gynecologist once and get examined to find out the cause for your problem.
And with her advice take hormonal pills to control the spotting.
By using the pills for 2 to 3 months menstrual flow can be regularized.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429