Joint pain after pregnancy Anyone????

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After my second daughter at 25 I noticed it has completely messed up my knees and ankles.  When I walk some days my ankles crack and I can barley move them. These are the same days my knees are in severe pain. It's almost unbearable. Does anyone have this issue!?? I'm going to go to the dr to get checked out but I'm worried this will be a lifelong issue. :(