question: I am 22 years old. As of last monday I weighed 256lbs and I am 5foot 6inches. I am 1month post pardum from my unplanned C-section for my 7lb little girl. I have been having extreme knee pain. Is this normal? When should I be concerned? It hurts even to sit. I do exercise and I push the baby in her stroller for walks when the weather is nice. It has been raining so hard here the last few days I haven t been able to walk. Please help I am some pretty severe pain and I don t know what to do.