Hi.. You have developed infection with pain around that wisdom tooth due to food accumulation. You might develop mild to moderate swelling in that area.
You will be examined clinically and medications are prescribed. Dentist might advise you for extraction.
Next Steps
Visit dental surgeon as early as possible.
Health Tips
If you cannot clean it due to pain, use a good antiseptic mouthwash or even warm water and salt to flush it out and keep it clean.