A friend of my cough up blood couple of hours ago and she ses it wasn t the first time, from the start she ses it s nothing but if its a continue thing im concern , from the start I think it her lungs but im not sure, now she ses her tummy aches on the left side. She wont go see a doctor but im telling her to go see a doc so she can be sure its nothing. Im really concern that it might be lung problem s or Sarcoidosis Should I be concern or maybe its just something that it will pass by