Hello, As per your complain feeling of blocked ears along with a history of having repeated flu and sinus infections can lead to infection in ears along with the accumulation of fluid behind the eardrum. I would suggest you consult an otolaryngologist and get evaluated and an otoscopic examination can be diagnostic. He can advise you a course of antibiotics like Augmentin, anti-inflammatory painkillers like Ibuprofen, decongestant nasal sprays as well as oral medications, steroids. Manual drainage of fluid can also be established. Avoid excessive water exposure like swimming. Avoid popping of ears as it can damage eardrums. Avoid exposure to very loud sounds. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Honey Arora