Yeast infection 1DPO. Treat it? TMI (no pics!)

Amanda • My husband and I have been married for 5yrs. We`re currently expecting #3 and couldn`t be happier!
Hi ladies. I got a postive OPK yesterday. We BD'd and go figure, this morning I started to feel a little itchy. Checked things out, didn't notice anything in my CM. Went about my day as usual. BD'd again tonight and felt very dry and am now CRAZY itchy. Went in and checked with a mirror and there were tiny white bumps everywhere inside. Am I safe to use an OTC kit (such as miconazole) or should I tough it out and wait to see if we end up pregnant? I don't want the cream to ruin our chances of conceiving. Thanks in advance!