Hello everyone. Can you please tell me what it could be?

Hello everyone. Can you please tell me what it could be? Today my bones started hurting (like I suddenly did a split and stretched everything down there). Plus my coccyx, lower back, it hurts to walk and I'm doing it like a penguin ? Sitting for 5 minutes on a chair, barely standing up (it hurts so much). I feel like a grandma! Maybe someone has it too. How was it? November 1st