I have a 20 month old heifer that is 3 months pregnant. She developed bottle jaw and the vet came out Saturday. She's lost a little weight, but we've been in a drought and I attributed the weight loss to that. No diarrhea, no loss in appetite. Vet wormed her even though fecal came back negative twice. She got a magnet and bolus. Vet did blood work for Johnes. I'm scared to death it's Johnes.