You just need to see a doctor. A local doctor would be a good starting place. He/she must be a "MD", not any quack doctors. Either that doctor will start a process of treatment or refer you to a specialist. When you make appointment be sure to describe lump in detail as that will get you quicker appointment. If you are unhappy with local docs then look for a large group of docs nearest you. Bandon or Coos Bay must have competent docs. Ask around, check references.
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In any case start with a "primary care" medical doctor and go from there. Good luck.