Moms: Yeast Infection...Symptom?

I am in between ovulating and my next period. I noticed some discharge today that made me think I have a yeast infection. I haven't had one in YEARS. 
​If our "trying" worked, I could be just 12 days pregnant. Could this be a pregnancy symptom? Or is it from (TMI, sorry) not cleaning up after sex and having excess moisture down there?
​Has anyone experienced this? Would an at-home test be a waste?
​(Before anyone lectures me-yes, I plan on treating this. We are currently being snowed in so I'll head to be pharmacy ASAP.)

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