My period is due in 1-2 days and I think I'm having a yeast infection but i don't have the typical itching and redness (I've been diagnosed with it so i know how it feels) and i don't know should i use the Monistat right now or wait until my period finishes so it can work better? I'm like 50/50 sure if i have the yeast.. I have a bit of discharge but it's only on the lips on my vag, not coming out on my panties. What is the best to do and will it do any harm if I wait that long for treatment?