I fell with all of my weight (~160#, 5'2") (onto the edge of a metal tailgate) and the "hit" focused horizontally across my shin. I thought I had broken my shin bone at first. Extremely painful. Happened about 7pm, 5/6/13. Damaged area was approx 2.5"x1.5". It's now 5am, 5/14/13. There is swelling (4"x3"), slight "bruised" coloring, mainly severe pain, walking is difficult but possible with limp, bending knee very painful at site of "hit". I don't have insurance and can't afford a dr visit.

Nobody can diaganose you without actually seeing you and it would be irresponsible to do so.

You have three choices... #1 you find the money to go to a doctor, #2 You find a clinic local to you to visit, or #3 you rough it out and hope nothing much happened.