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Have you started using a new Sanitary pad recently. It's possible you could have allergy
to the pad. Also if you are sexually active it would be wise to get tested for STDs. Any burning sensation on passing urine. Keep the area clean. Take an antihistamine to get relief from the itching. Better to get it looked at by your Gynaecologist to rule out infections. Get your PAP smear
and blood sugar tested as well.