What Are The Symptoms Of Yeast Infection?

I just had hard whitish and a bit pinkish discharge leave my body as I went to the bathroom. My last period was a few days late but normal. I've also experienced itching and thickened pinkish and whitish discharge for the past couple of days. What is going on? I thought maybe it was a yeast infection, but after this large amount of tissue leaving my body I'm a bit scared. I hope I wasn't pregnant...