Hello, I believe my mare is pregnant but we aren't 100% sure..... I am attaching pictures of her and her udders. I have not been able to get the vet out to determine 100% if she is or she isn't. I am a single mom, and the tranny went out on my vehicle and I had to get it fixed. Since I am the only one paying the bills I don't have any cash to get the vet out until next month... Do you think she is pregnant? If she isn't what would cause her to develop a bag, and her stomach to drop like it has? I have only had her 4 months, she is wormed, hooves trimmed, and yes she is on sand, but she is sand cleared monthly. The picture on the right is of her udders yesterday morning, and the picture on the left is of her udders this morning. They do appear to be going down at night only to return slightly larger the next morning her personality has changed greatly, and changes greatly on almost an hourly basis, horses she likes she tries to bite, horses she doesn't like she wants to stand inches from... she will isolate herself in the pasture, then go to the fence and reach her head over to get closer to someone (people or another horse) she is not off her feed. She will eat all of her hay, but eats her grain very slowly.... I have NEVER had a pregnant mare, and any helpful advice is greatly appreciated.