I have read your question,
I think you are suffering with one of the Pelvic Inflammatory Disease
(PID) , You didn't mention that does the discharge has an odor or not , If odor is there it is due to an infection of genital tract .
Sometimes Anemia and Constipation
also cause Vaginal Discharge
Further I suggest you to consult a gynecologist nearby for medical advice
Wishing you a good health,