itchy

Kayci
A little bit of tmi; sorry in advance. 
Last week during my period i had pretty bad diarrhea i was also sick at the time a bit; but my butt and the split between it and my vaginal opening for very sore, and raw. I used ointment and now it's itchy from healing, but now around my clit and vaginal opening is very itchy. Is this a sign of yeast infection?