My mare didn't go back into heat so I gave her an equine urine preg. test it and came back positive! Hurray! According to my breeding dates, she would have been 342 last week. She has a small bag and I have managed to get the smallest drop of clear liquid out. Her vulva relaxes and shrinks. After reading a bunch, I have heard that some mares keep small bags (she has had one previous foal), always have a little liquid, etc. I'm starting to wonder if she's pregnant at all, or just fat. Has anyone had a false positive result with these kind of pregnancy tests?