Word creates funky formatting problems with many online editors (like newsletter editors, blog posts, website content management programs, etc.) That’s because Word inserts its’ own set of formatting codes into each document. Those would get copied into your post if you just copy and paste directly from Word.
If you’re having trouble importing direct from Word, try cutting and pasting to Notepad (which eliminates Word’s funky formatting).
You can also copy your text and open a new Word document, and then select “Paste Special”. Select “Unformatted Text” to get a version with the formatting removed.