My family member has got a lump, inside arm (bicep) just above the elbow. They have sent them for a blood test and to see haemathology team. They went a while ago and doc said it was fatty fliud or something. This doc said it mught be a lymph node so best to get it checked. They feel healthy and doesnt feel ill atall. I am so so so terrified! I cant calm down. Any advice? Am i over thinking and worrying?