<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Im feeling really worried about my health. I have this irregular belly button, low back weakness, pus in my sputum, skin rash, and Im also experiencing some back weakness.  <response>: It sounds like you may have Omphalitis. This is a bacterial infection that affects your belly button and can cause discharge and an irregular appearance. It can also spread to other parts of your body, causing symptoms like a skin rash, low back weakness, and pus in your sputum. Well need to do some tests to confirm the diagnosis and start you on antibiotics right away. 