We recently had a stray cat adopt us. She is now very pregnant. We took her to the vet yesterday and they told us she could deliver anytime in the next week. Tonight when I got home, I noticed a small amount of discharge. It is greenish and the consistency of mucus. Is this normal? Is this a sign of the onset of labor? We've had cats for years but never been through the pregnancy & birthing experience. I have no idea what to expect and I think I am probably obsessing about this too much.