Anal Fistula

Dear All,

I need your expert opinion and to suggest me some medicines for fistula.

My history

I have been fistula since 2013 but i was not aware and regularly ignore it. In 2017 the pain becomes worsen and check it by surgeon he diagnose it as fistula and advised me for surgery. I did surgery in April 2017, but fistula did not heal during the time i consult my surgeon regularly and he regularly prescribe antibiotics for four months. My condition was going worsen day by day.

Then i start homeopathic treatment (watched dr vikram videos on youtube) and bring the following medicines and use for four months but not a good result
1) Silicia 6x 4tab thrice a day
2) Calcaria flour 6x thrice a day
3) Hepar sulph 200 4 drops two times
4) Calcaria Sulph 200 4 drops two times
5) Graphites 200 4 drops in morning
6) Thuja 1M Weekly at bed time

After using these medicines i feel better and start going my office but my fistula did not heal fully.

Then i visit another homeopathic doctor and discuss my concerns, he prescribe me the following medicines which i used for two months

1) Silicia 6x 4tab
2) Gastric Ulcer syp
3) Skin Cure syp

When i stop the medicines pain and itching start again

Now i am using the following medicines since one month

1) Silicia 6x 2tab two times
2) Natphos 6x 2 tab two times
3) Ferrum Phose 6x 2 tab two times
4) Arnica 30 5 drops two times

Still i am feeling pain in anus and pus discharge (no smell, yellow color) regularly.

Please advise me