You can also use live yoghurt directly on the affected area, if you can find some.
I would say be careful about taking medication for thrush, especially topical ones, without getting the infection confirmed. I had recurring thrush and UTIs and then I got a condition called vulvar pain, which basically means that any contact there is painful - not really very desirable. Some people think there is a link between these recurring infections and vulvar pain.
Here is a list of some other things you can do to prevent thrush:
Do not use soaps, bubble-baths, deodorants or vaginal wipes in or around the area.
Clean the vulval area only once a day, avoiding scrubbing with flannels and brushes.
Try washing undergarments with water only. Fabric conditioners and washing powders contain potential irritants to the skin.
When washing your hair, avoid allowing the shampoo from coming into contact with vulval area. Try washing your hair in the sink.
Use unscented, unbleached tampons, sanitary towels/pads and pantyliners, such as Natracare products (www.natracare.com
Avoid wearing tight trousers and tights. Try not wearing any underwear at all even.