Why doesn't your food digest sometimes?

I apologize in advance for the tmi. I had a normal breakfast at 7AM (jimmy dean sausage sandwich and coffee) and felt queasy all day and it is 105 today so the heat doesn't help and I didn't eat lunch or anything else and at 4 I finally threw up and I literally threw up breakfast and I am wondering why... show more I apologize in advance for the tmi. I had a normal breakfast at 7AM (jimmy dean sausage sandwich and coffee) and felt queasy all day and it is 105 today so the heat doesn't help and I didn't eat lunch or anything else and at 4 I finally threw up and I literally threw up breakfast and I am wondering why didn't it digest? I don't feel like I have a bug or anything just hot and tired.Im sipping ginger ale but don't want to chance any food just yet.
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