Kindly don't worry, You'll require an antihistamine to control the swelling and you can apply ice indirectly over the area 3-4 times for 10-15 minutes a day so as to reduce the swelling over the area. If the problem persists or worsens kindly visit the ER at the earliest.
Next Steps
Follow the steps as advised
Health Tips
If condition persists or worsens visit the ER at the earliest