A family of Microsoft word processing software products for creating web, email, and print documents.
Before you convert the Word document, look at it in the print preview at File > Print. This is the best way to see which formatting you could expect in the converted PDF.
I'd like to emphasize that I also support Charles's suggestion to share the document, or a representative sample from which you have removed any sensitive content. That is often the quickest way to troubleshoot these types of issues.