thanks for using health care magic.
Every collection of pus has to be drained and that is
the first treatment that is required along side antibiotics
such as amoxicilline and metronidazole
and clavulanic acid
The chest pain
you feel could be due to a stress ulcer or
due to a tear of the gut due to repeated vomiting and to
a far extend could be due to a chest infection
You should meet your doctor and discuss in details with
him on the appropriate management.
, antacids to chew and some
antibiotics will do as you go to meet your doctor.
Hope this helps you.