I was goofing around with my brother, fake fighting as siblings do, when my brother grabbed my index finger to deflect my hand. I felt immediate pain in my finger and found it difficult to bend it. It was also swollen around the middle joint. Three weeks later, I have better range of motion. But I still can t completely bend my finger or make a fist. And it hurts when I start to use the envelope. When I accidentally hit my finger or jam it on something, I feel immense pain. It also still swollen around the aforementioned joint. Does this sound like a sprain or a broken finger? Or something else? Thanks!