Yes, it is possible to get thrush
in your throat.
You have mentioned it in left tonsil
, does it bleed on touch on trying to remove it ? Do you have any upper cervical lymphadenopathy
(Marble like swelling on side of the neck) ? Anyway, at any case, throat swab for culture and sensitivity is must. In addition, I also prefer throat swab for KLB and KOH mounting. In your condition, my personal assessment is that you might be benefited by "Povidne-Iodine" ORAL GURGLE (From any Good Company) thrice daily. Continue the antibiotics prescribed to you. Review it with culture & sensitivity report. Avoid cold
beverages and strong spicy food. Also add one vitamin to your diet.
This will help you a lot.
Thanks and get well soon