Dear friend, welcome and thanks for entrusting your query here at HCM!
I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here.
I think the pain is not severe and you can use the arm without restriction. This is unlikely to be a fracture
But the tingling numbness in the little fingers seem to be due to ulnar nerve irritation
behind the arm bone.
Are the affected fingers numb and weak?
I think this is just blunt trauma
and you can wait. The bleed of the bruise gets slowly absorbed.
Take simple pain killers like paracetamol
But if the tingling in the fingers continue, please see your doctor to rule out ulnar nerve injury
I hope you are fully satisfied with the guidance I gave.
Hope I have answered all your questions. I would be glad to answer any further queries. Please ask for any clarifications before closing and rating this answer.
Thank you and Good luck!