I Was In The Hospital Last Week Cause INR Was

I was in the hospital last week cause INR was 7. I was given a viyamin K shot on my right upper arm. Now I have a breaking place where the shot was given, one next to it. One on my right tiegh. they are the size of a pop bottom. CAN YPU HELP ME aLO MY BOTHER GOT VITAMIN k IN HIS iv IN SUMMER OF 11. wHAT CAUSES OUR PROBLEMS