I slammed my knee into the corner of the dishwasher extremely hard a couple of weeks ago. I developed a horrible bruise but could walk on it fine for the next couple days. Then I started noticing it bothering me a little, so Ive been trying to take it easy with my usual walking. Now for the past 5 days i can hardly walk, putting any weight on that leg hurts like crazy, like my knee wants to give out on me.. it s excruciating. My knee cant seem to support any weight at all... especially when my leg is completely straight. What is wrong?