Add one bunch of parsley to 500ml of water. Bring water to the boil in a covered pan, turn off heat, and cool. Parsley is a natural diuretic and helps to flush out the micro-organisms that cause the infection. After every visit to the toilet, soak a clear cottonwool pad in water to which you’ve added a few drops of lavender oil and hold it against your vagina. This will temporarily relieve the burning sensation.