Ear & head pain on left side. Doc said fluid in ears. Antibiotics didn't work. Sudafed helped but ten days later pain by temple. Keep taking sudafed?

Need otoscope exam. You need an otoscopic exam of your left ear. If negative, I would consider brain mri. You can possible have acoustic neuroma (benign brain tumor), temporal arthritis, or mastoiditis. If negative mri, you need a sed rate to consider temporal arthritis.