Compatibility issue HELP?

I just recently got a new macbook air (my first apple product ever...) and have not had any issues until now. I created a bunch of figures (with pictures, arrows, labels...etc) for a scientific article in PC powerpoint which were later put into a word document. When I try to open the word document from my external hard drive on my mac, most of the figures are messed up (aka pictures tilted, labels in wrong spot...etc.) and it says 'compatibility mode' at the top of the word document. Is there a way to open this where the figures are not messed up? The powerpoint file where the figures were created seems to work fine but getting them into the word document and aligned/sized/combined with text correctly took me a long time so I would rather not repeat it. I need to edit the word file and make a pdf which would be easy to do on the mac if I could just get the file to open correctly. Should I just stick to doing the editing on a pc? if so, how do I convert it to a pdf? help??

 

it is microsoft office 2011 for macOSX