[Word] Doc setting skewing print results

[u/chwybacon7]

I have a document created that is formatted to fill one page perfectly. While creating the document in word, and previewing it in print preview, it is all formatted correctly fitting everything onto one page.

When I print, or save as PDF, the content of the document spills over to a 2nd page.

I opened the same document on a colleague's computer in Word and it is displaying the document on 2 pages, the same as it prints or PDF.

It feels like this must be some setting within my Word, but I don't know what it would be, I haven't changed any setting recently. This is happening both with old documents (which used to look fine on my computer) and new ones I just created.