I accidentally bump my hand into my husband very hard as we crossed paths, and I heard the joint of my thumb crack. It really hurt. The pain didn't subside and now three days later, the pain has extended to the underside of my arm. The joint and base hurt the most though. Could this be a sprain or a fracture? I don't notice a swelling but it hurts a lot. I do the cleaning and taking care of my 1 year old, but not without grunting and whining.