Acijel - a vaginal "acidifier" may help. Brings the vaginal pH to the correct level so good bacteria thrives and kills yeast. Don't use the applicator in pregnancy though. Also, avoid using soap and other cleansers. warm water and a pH 5.5 cleanser (Sebomed) if possible. Keeping a tube of canesten( ask for 3 day cream - it is stronger) in the loo and apply each time you go to the loo (externally without applicator) will help.