HELP.....

I am having extreme itching around my vulva, and it think it's a yeast infection and I'm literally about to cry because it itches so bad. I put hydrocortisone on it, and that kind of helped but it keeps it moist making it even more probable for yeast to grow. Can I use the generic of Monistat? (I was going to get it, but they wanted $15 for a week treatment) I am 34+5 days pregnant and I cannot take this anymore. I don't know what to do, someone please help me.