I'm so sorry for your loss.
Due to information I had seen here I asked my vet if he thought my mini might have ulcers and he didn't think it was likely but I pushed and he said it would do no harm to put the mini on Gastroguard for a couple weeks and see what happened. If it worked, boom, we knew he had ulcers. And it was cheaper than scoping!
After about seven days the gelding's appetite began to increase and after two weeks he was like a different horse. I felt so bad when I realized how he
should have been acting all that time, but the decline in his appetite had been so gradual I hadn't noticed.
Unfortunately we'd only put him on a half-dose of Gastroguard (the vet thought that would be sufficient for a minor ulcer over 30 days and money was a real issue at the time) and the ulcer came back as soon as I took him off the meds. I had to pay to put him on a full course of Gastroguard for ANOTHER 30 days, then reduced it to Ulcergard levels for the rest of the show season in order to keep him comfortable. I wish I'd just done it right the first time.
To this day he's still prone to them and I don't think I'll ever take him somewhere without dosing him full of Ulcergard first. It's just not worth the heartache of watching him go off his feed and try to work through the pain.
Again, I'm so sorry about Jingle Belle. Never be afraid to push the issue of ulcers with your vet- most of them don't know what a problem it is.
Leia