YI while TTC?

So I'm pretty sure I have a yeast infection (swollen, hurts to pee and have sex, and kind of itches). However, there is not discharge and no smell. My SO and I have BD everyday of my cycle since CD6 up until CD14 (except for CD11 and CD12). This is my FW and I have received positive OPKs in the past 2 days. I have also been tracking BBT and my temp dropped .2 this morning when I first noticed the symptoms. 
Is it safe to treat with OTC YI treatments (I.e. Monistat/vagisal)? 
If I have already ovulated and have a fertilized egg, will this affect implantation?