Yeast infection

I'm 36+5 and almost positive I have a yeast infection. Been itchy and burning, no clumpy discharge but still the other symptoms. The ob told me to use the 7 day monistat, I'm on day 5 of it and no change or improvement. I'm so irritable and its bothering me so much. I was going to call them back and ask if there's anything more I can do but tomorrow is Saturday. Do you all have any suggestions? Really want to get rid of this soon, was hoping for a vbac again.