i find a mobile lump on side of my head, the pain seem to happen more frequrency then before and just like thundering, i can not sleep on it. i am 45 year old, female, 5 feet below and57 kg. i have a mobile lump over 11 year ago, it just on top of my head, but now is nearly on top of my ear. my dr told me it just mobile seed i do not have to worry about it?