<s>[INST] I have been having this yellow fluid coming out of my belly button. It smells badly and when it dries it leaves all this crusty stuff in around the inside of my belly button. I clean it daily but it always comes back. Could this be a infection? Some times when i lay on my back I get a sharp pain in my stomach near my belly button. Is this something I should see my doctor about? [/INST] Hello and welcome to healthcare forum. From your history it seems that you are suffering from vesicocutaneous fistula due to patent urachus, which is a connection between urinary bladder and umbilicus. You should visit a surgeon for this condition as soon as you can. </s>