Suggest Treatment For White Discharge

Hi doc m 28 yrs old my height is 5.5 n weight is 80kgs.M unmarried n having white discharge problem from many years. please suggest me to get rid of such discharge.I feel very tierd in these days. My periods are regular n ths discharge occurs after 15 days from my period in it remain discharging for 1 week or 10 days. Pls help.