Hallow Dear, Thrush is a fungal infection. This is known complication after antibiotics treatment, particularly prolonged one. The antibiotics also kill the required friendly bacteria in the body, e.g. Lactobacilli. These bacteria protect us from the fungal infection. Therefore, usually whenever we prescribe any antibiotics, we give adjuvant probiotics therapy which contains Lactobacilli also. You had three courses of antibiotics in a short spell. That has lead to this fungal infection. I would advise you to take tablets of Lactobacilli along with the antifungal medicines, lest the risk of recurrence. Once the fungal infection is cured, you will get rid of weird taste and white tongue. That whiteness on the tongue is nothing but fungal growth. I hope this serves the purpose. Dr. Nishikant Shrotri