I'm having thick white creamy discharge with a sour odor. no burning when urinating and no itching. ?

Infection: I assume you are referring to vaginal discharge which suggests yeast infection. If you have urinary discharge then you could have STD, i.e. chlamydia and/or gonorrhea. You should go to your primary care doctor and get examined for vaginal infection or urinary infection and get tested for yeast infection, bacterial vaginosis, and/or chlamydia/gonorrhea. Diflucan (fluconazole) treats yeast infection.