I am sorry that you had a fall and sustained this injury
Looking at the scenario that you have described, I would suggest you to be examined by a Primary care
physician. Check if it requires an x-ray to be done.
You need to take simple analgesics like Tylenol
thrice daily for next 2 to 3 days for the inflammation to subside. It is available over the counter.
Meanwhile, apply ice packs every 3 to 4 hours to the areas that are black and blue and are turning stiff.
I wish you a speedy recovery.
Hope this helps.