I had a period for two days, but got a yeast infection in meantime

I had my period on Wednesday the 16 of Nov and it lasted two days. I had got a yeast infection Tuesday the 15th , I feel nauseous my breast are tingling and I had lower back pain. But now its Sunday November 20th and I went to the bathroom and there was light blood when I wipe, what does that mean.  I still feel sick in my stomach.Could I be pregnant or no. So confused