This morning I noticed that Dottie my 18 mos old who I think was bred on 7/15/07 was acting like she was uncomfortable -her tail was clampled down. When I lifter her tail, I found that her rear end had the bulgy look of a late pregnancy. Her ligaments are firmly in place, she might have been bred earlier but not by more than a week. She is eating normally and pooping ok althoug I think there was some mucus in her berries this morning (I don't know if it was Dot or Tim poop.) No sign of a bag. Tonight her tail is still clamped, she's still bulgy -her rectum is tucked well under her tail much more than normal. But everything else says no kids yet. Is this normal or not? Should I take her to the vet tomorrow? There has been no change in her situation all day.