Hi I Have Just Finished My 1 Week Treatment Of

Hi I have just finished my 1 week treatment of amoxicillin around week ago, since then my thoot is very sore why would that be, I had bleeding from 2 teeth at the front even after amoxicillin my dentist just told me to use floss that's all, I didn't have any pain before amoxicillin just very bad smell, now smell is gone but pain occurring