Hi, I ve been ill on and off for last 6 months have had a swollen left tonsil never gone down in swelling, sharp pain under bottom left rib,fatigue,hard to swallow being sick after eating I ve seen countless doctors and nurses had blood tests and throaght swab all came back nothing to being told of one nurse glandula fever then another one say viral infection or allergy so confused??? not sure any advice next step too take.