Elbow Swollen I Fell Really Hard On My Elbow On A Gym Floor And Now I Have A Really Swollen White Line On It. Blood Vessel?

I fell really hard on my elbow on a gym floor and now i have a really swollen white line on it. Blood vessel? - elbow swollen

I came into the gym floor hard and now my elbow is swollen and there are white puffy about 1 cm thick and 1 1 / 2 inches long .. To tell school nurse, it could be a blood vessel, it is clear an idea of what to do?