I just proofed my active dry yeast in water and sugar. When I came back a few minutes later, i found small red specks in the yeast mixture. I figured that it was just something in the water or something so I dumped the batch and started again, this time carefully checking each ingredient as I put it in. I saw the specks again when I put in the yeast. Does anyone have any idea what it might be? I took some out to look at it closer. It isn't bugs. The yeast isn't expired- I only bought it a week or two ago. I have been storing it in the freezer. Does anyone know what the problem might be? Thank you.