My cane corso dog (8-9 months old, 40 pounds---somewhere in that range) was hyper and she jumped on me and her paw landed in the middle of my chest. Straight in the middle. Every time I breath in and out it hurts, and when I press on it to see if it went away, it hurts even more. Why won't this go away? It happened on Saturday the 21st and it still hurts today. What can I do?