i would like to start answering your query by telling you that thankfully you dont have any form
of oral cancer
the white discharge oozing out of your gums is just pus from the periodontal pockets due to gum disease
you can wait to get back to your country for the treatment which would include OPG x ray to see the condition of alveolar bone some other dental examinations.
meanwhile you can go to any local dentist
and ask him to do scaling that is dental cleaning.
is not severe then scaling can even fix your problem.