A family of Microsoft word processing software products for creating web, email, and print documents.
Sounds like your file has become corrupted. There are a couple of people on the forum who are expert at handling this sort of problem. Just hope one of them see's this question.
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If you want to try a DIY method of recovering your text try this.
- In File Explorer, make a copy of the file
- Edit the file name, <F2> shortcut,
- add .ZIP to the end of the file name, click "Yes" to the prompt
- Double click on the "zip" folder to open it
- Double click on the Word folder inside the Zip
- Double click on the "Document.XML" sub file to something that looks like this, with your body text embedded withing formatting codes
In this example I've highlighted the 3 yellow heading 1's in the document