I have recently started running, and have been swimming and doing water aerobics. The back of my knee (right on the outside edge) started hurting, and about the same time a muscle in the upper outside area of my calf started feeling tight. My knee keeps popping and giving me a lot of pain, and I feel like I can't unbend it completely. It also feels unstable sometimes, like it's going to give out. I'm thinking I haven't been stretching it out well enough, but I don't know what to do about it now. Any suggestions? I have no insurance, so I'd rather not go to a doctor if I can avoid it.
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