Sorry to hear about this Accy. You do seem to have been getting some pretty rough breaks lately, if you'll pardon the expression.
Crappy behaviour by the cabbie. Did he work for a minicab firm? Did you get the name? I would've been getting my complaint ready when he refused to help with the bag, never mind 'tipping' himself. Any licensed cabby (and they all have to be these days) has a code of conduct they have to abide by, and though refusing to help with baggage, while scummy, is probably not in breech, I'm bloody sure helping yourself to other people's money is. Seriously, I'd complain, if you can. If no one complains, nothing changes.
As to the injury, my advice would be to take it very easy for at least a week or so and see how you go. When I had my first review a couple of months after breaking my hip, I mentioned that I'd been trying to keep active, but thought I may have been overdoing it. "Oh," they said, "No, don't try to exercise at all. Just stay on the sofa. Your body needs rest, to heal itself. No exercise at all till we're sure the bone's knitted." Thinks: Oh. Thanks. You might have mentioned that earlier...
Anyway, you might or might not have a break (I would suspect not if, as you say, three different doctors have reviewed the x-rays and agree...but you never know) but I would err on the side of caution, and take it very easy for awhile. At best, your body's had a nasty shock. And it's still possible it is actually properly damaged, by which I mean more than just bruised or strained.
I'm shocked, finally, that the hospital wouldn't issue you with crutches. Surely the criterion should be whether you feel you need them, not what some other person theorises about your condition. Doubtless it comes down to cash. But that's no excuse. I have a horrible feeling that you might be right that they've taken a judgement on your moral character, based on your speech impediment, and acted accordingly. And really, they've no business doing that. If you said you were sure you couldn't walk safely without crutches, you should have been given crutches.
Anyway, good luck and GWS.