My daughter just got over a bout with strep throat, is still finishing the antibiotics and now has pain and swelling in her mouth at the back of her jaw. Bottom only but on both sides. Thought at first it might be her wisdom teeth, she is 21. But problem appeared before strep was completely gone. She was on predizone and amoxicillin. She says when she eats it feels like the food is cutting into her gums.