Is having discomfort and minor aches approximately one year after inguinal hernia surgery normal?

Yes and no: If the pain started after some physical activity like a heavy lifting it could be normal pending how the hernia was repaired open or laproscopic with or without screen or mesh. It it happen without any incident then it is not normal . Take ibuprofen 600-800 mg after each meal for a week . Either way if pain persisted see your doctor