There is vaginal itching when i need to urinate, then the itchy feeling will linger for about 10-20 minutes after than go away. there are no other symptoms?

Yeast infection?: Vaginal yeast infection is possible with these symptoms. Best to see a doctor for diagnosis and treatment. Or you could try an over-the-counter yeast medication -- but for sure see a doctor if it doesn't clear your symptoms in a few days. Any product with active ingredient endin in "azole" usually will work: miconazole, clotrimazole, terconazole, and several more.