My fan keeps on making squeaking noises and only blows out dust.

When it fell over it knocked a bunch of debris loose you will either have to run the fan on high until some of the dust is blown out (maybe do this outside) but a better way would be to buy a can of air (canned air Compressed Air ) and blow out any debris that lossened in the fall, again you should do this outside. Repeat the process of blowing the fan openeings out with the can in the upright position only, and turning the fan on high.