Vaginal Yeast Infection is generally known as Vaginal candidiasis
caused by Candida albicans. Antifungal cream as you mentioned Monistat cream which contains Miconazole
nitrate 2% or in suppository form is ususally enogh for cure. If no relief you can use oral medication of antifungal drugs like fluconazole
may repeated as required.There may be secondary Bacterial infection , for which you need to take a course some antibiotics and nonsteroidal antiinlamatory drug. Sometimes high estrogen levels caused by pregnancy
or hormone replacement therapy
can also cause it and certain health problems, like diabetes or HIV infection increase the occurence. Practice good genital hygiene is essential to prevent it.