These symptoms suggest a possible ear infection. Because you have fluid discharge, it is crucial not to use any ear drops until a doctor examines your ear, as drops can cause damage if your eardrum is ruptured. For temporary relief from severe pain, you can take generic over-the-counter pain relievers like paracetamol or ibuprofen. Please see a healthcare professional promptly; after a quick examination, they may prescribe generic antibiotic ear drops (such as ofloxacin or ciprofloxacin) or oral antibiotics. Keep your ear completely dry during showers. This is a very common and highly treatable condition, so please do not worry.