My friend thought that she got her wisdom tooth , but she has swelled painful gum with pain in her throat only in that half of her face ,how to manage?

See a dentist!: It may or may not be the wisdom tooth. Either way your friend should see a dentist for care..

Get help: Pain/swelling requires immediate treatment. This can't be cured with a pill, police, or rinse. Please see a wisdom tooth specialist, an Oral Surgeon, for immediate relief.

Oral surgeon: She needs to see a doctor ASAP. For best results, make sure she is evaluated and treated by a board certified oral & maxillofacial surgeon.