Hello and welcome to e health forum.
The description of the lump and the symptoms are not adequate to make a proper diagnosis.
The symptoms of blood from the nose and the enlarged lumps behind the ear (probable lymph nodes) could be a sign of infection in the nasopharyngeal tract.
You may need a proper examination and prescription medications including antibiotics to clear the infection.
The cause of your abdominal pain also needs to be assessed with a physical examination and proper evaluation including tests like a ultrasound or a upper GI endoscopy to rule out conditions like peptic ulcers.
Hence you should try to clear up , the issues with your insurance, and then consult a doctor at the earliest for proper treatment.