Yep, it can normally be all different colors (old, etc.)

Women's cycles can all vary as well. Endometreosis (sp?) can cause bleeding outside of the period with pain, etc.

HOWEVER...

What does concern me is the odor. Anytime an odor comes up from nowhere, it should be checked ASAP.

With a combination of the irregularity and odor, I'm glad you're going to get checked ASAP, hon.

KD