What Causes Painful Urination And Green Vaginal Discharge?

I have green odored vaginal discharge. I feel feel itchiness and pain (like needels) in my vagina. I feel pain every time i urinate. I went to the gynecologisy, have medecine, il went for some time but reoccur again; i dont know whether it is intercourse that causes it or peels. I have only one partner.