Welcome to HCM,
From your history it seems that you might have fungal infection
at the site as you have presumed.
But at the same time you might have some urinary tract infection
and some local bacterial infection as well.
Go for routine urine check up and if possible for vaginal swab testing.
After report specific treatment can be started.
Meanwhile apply anti-fungal cream and antibiotic cream locally.
Main thing is keep local part clean,dry and healthy.
or Levo cetrizine for itching and tickling sensation.
Ok and bye.