I am a dancer, and have a show coming up next week. In this show, there are a lot of knee drops. Where you basically drop onto your knees, from doing this my knee has swollen and I think I now have fluid on my knee cap. Then, yesterday a huge bruise came up on my calf and I don t know why, because I haven t hit it there. Are these linked? and should I be worried? Also, I stubbed my toe on Monday and that is very swollen and bruised, so is the leg bruise linked to that instead?