hi and welcome,
This is definitly not normal. i suspect your tooth is infected badly with an abscess
formation that has spread to adjacent tissues. Periodontal abcess presents with swelling on cheek mucosa and jaw. it often gives pain, fowl mouth odour and nauseatic feeling. Amoxycillin
is just not enough.
I suggest you to start with antibiotic course of augmentin
( amoxycillin with clavulate) 625 mg along with NSAIDs seraatiopeptidase tablet for 5 days . This will definitely relieve the symptoms.
See your dentist
and get a x ray examination done for the affected tooth. as the infection subsides the tooth can be saved by root canal treatment
followed by medication.
wishing you quick recovery, take care.