Is she pregnant

Question
I bought my horse in Oct. She was in full pasture 24/7 as she is now. I have been measuring her belly cuz my saddle will no longer fit. She has gained 4 dn 1/4 inches in 5 days. She's foaled before 3 years ago. She is 7. how do I know for sure she's pregnant, and if she isn't what the H### is wrong with her??


Answer
Dear Shelia,
          The only way to be sure is a pregnancy test, but she will get larger, eat more, and much later her teats will get harder and loose milk. You can either wait for the teats to become enlarged, or get a pregnancy test. IF she is not pregnant it may be that she is putting on weight from the summer grasses.
Michelyn