Thanks for the query.
According your description there is possibility of some hormonal
You once consult gynecologist, get examined, go for ultrasound
and if needed mammography
After examination if the doctor suggests you may have to go for hormonal profile including prolactin
By doing this primary workup the possible causes for your problem can be identified and treatment can be given.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429