I have found thrush to be so persistent while I am pregnant, I dont get the full symptons or full blown thrush everytime but an itch that can hang around externally like you have described. If I left it untreated it would just get worse and it also caused my swelling to increase badly.

I found inserting the creme for the full 6 days would solve it for awhile and it would come back, so I have just resorted to applying it externally to where the itch exists and only going the full treatment when it is full thrush. I also used ice packs to reduce the swelling, and eat a heap of acidophilus yoghurt. Heard about some people actually using the yoghurt down there but I dont think I would be to keen to try that one.

My ob recommended laying down with no knickers on and letting everything have a good 'dry' out once a day, as the extra moisture and temp during pregnancy makes it heaven for the bacteria, no warm baths and only loose cotton nickers.

My first pregnancy I just treated it each time with canestan and it was alot worse, this time I seem to control it better by doing other things.