I read your question carefully and I understand your concern. First of all, if you had just flu like symptoms, it is usually a viral infection (not a bacterial one) and antibiotic treatment is not effective and not recommended. I believe with flu like symptoms you mean runny or stuffy nose, cough and/or sore throat, headaches and/or body aches, fever 100F (37.8C) or more. In this case you need only supportive therapy, like drinking fluids like water or electrolyte beverages to prevent dehydration. Covering up with blanket to calm chills, resting a lot, gargling salt water to soothe a sore throat. To alleviate stuffy nose, sinuses, ears and chests, to reduce fevers and discomfort you can use decongestants and/ore antihistamines (e.g TAYLOL HOT which has has analgesic (pain relieving), antipyretic (reduce high body temperature), antihistamine (anti-allergic) effects) or other NSAID drugs. If your symptoms persist or are getting worse, than it is a possibility you might have a bacterial infection, for which you require broad spectrum antibiotic therapy. In your case you have also a bad earache, which can be a sign of acute inflammation of middle ear, so you probably need antibiotics and supportive therapy, but you should consult your family doctor and/or ENT doctor, in order to evaluate more objectively your situation. I hope my answer helped you. Wishing you a good health