Your symptoms are likely due to eye strain and tension, possibly caused by poor posture and prolonged reading or screen use. Try to rest your eyes regularly, use proper lighting, stay well hydrated, and take short breaks to stretch your back and relax your mind. You may take a mild pain reliever like paracetamol if needed, but avoid overuse. If the pain is severe, persistent, or accompanied by vision problems or fever, please consult a doctor promptly.