How worried should i be if i have thrush?

Depends: If you are immunocompromised, e.g., have HIV or other diseases, or are pregnant, then this can be a bigger deal. See your doctor.

Don't be worried: Thrush is a fungal infection that should be treated with the appropriate medication. You don't have to be worried but should attend to the problem by seeing your doctor.

Depends: If you do not have predisposing factors such as being diabetic, on antibiotics, on steroids, or other, this may suggest immune deficiency. Thrush is common when such factors are present, but this disease usually primarily occurs in infants, not adults. If you have any underlying risk factors, get evaluated.