Ob-Gyn questions? Ask a gynecologist online.
I'm sorry. I don't do phone service. It sounds like you may have a bowel infection. It may be caused by clostridium difficile. This can be identified with a stool culture. You will need a prescription by a dr to clear it up.
Often it will resolve on its own with no treatment. You are safe to wait if it seems to be resolving.
Yes. The color change is good