My new doeling (3 yrs. old), who I've had for about two weeks, who is pregnant and due to deliver the end of January started to cough the night before last. She doesn't cough a lot but every 1/2 hour or so I heard her while out doing chores. Yesterday I only heard her once when I was out there both morning and night. This morning she had a coughing fit that lasted 15 seconds or so. It is really, really cold here this week (below zero temps with the night before last minus 18). I put her and her wether brother in a totally inside stall every night and kept her there all day yesterday since it was so cold. It's not an enclosed stall, it's made of round pen panels but it's away from the doors of the barn with a wood board between them and the doors to stop any wind. My hay is a little dusty. Should I be concerned? I am!!