Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
As per your complain and presentation of symptoms it seems that you have a
dental abscess and swelling is due to pus formation below the root tips of the tooth..
Antibiotics takes a long time for resolving the infection so its better to consult an ENDODONTIST and get evaluated and get an
x ray done and if tooth can be saved
Root Canal Treatment will be initiated so that pus gets an escape way to get drained and swelling and infection will resolve faster..
If tooth cannot be saved extraction has to be done.
Dizziness and fever and cold feeling can be due to infection from tooth reaching the blood circulation causing
SEPTICEMIA and body's defence mechanism tries to fight infection and there is increase in temperature..
So getting treated soon is must..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora.