Why don't you get Chest X Ray
(Anterio-posterior view) done. That will clearly help one understand whether the ribs are fractured or not. Is there swelling over the ribs? Is it very tender? Do you also have any breating trouble? Any open wound or bruises?
I think you can wait for a couple of more days and see what the tendency of the pain is- whether it is coming down slowly or increasing with new symptoms. In the former case you would certainly be recovering from the blunt trauma
and in the later case you need to rule out fractured ribs.
Good luck. And make sure you avoid any severe hypoglycemia
like this in future by taking care of your diabetes