i understand the feeling,
i had never had an yeast infection in my life, then when i was 6 weeks with my first son, i got one. i went to the dr. and they told me i could only treat the itching and couldn't use anything until i was 14 wks.
so i suffered a yeast infection for 7 wks. it was sooo horrible.
but at 14 weeks, my dr. told me i could treat it with over the counter med. i used monistat (the one day ovual) and in 2 days it was gone. thank God.
so i would ask your dr. or nurse, but mine told me that it was safe.
good luck and take care