Probiotics as vaginal suppositories for yeast?

I have a yeast infection that keeps coming and going (mostly staying) and most everything I've tried doesn't get rid of it. It isn't that uncomfortable for me unless I try to have sex with the husband. I am also nineteen weeks pregnant and trying to be careful about what I take. My ob recommended yeast suppositories, I am having trouble but found some acadopholis probiotics you take orally. Can I insert these vaginal as well?