The way Candida causes the burning is by making tons of aldehyde by products.
This chemical is the toxin that inflames the nerves.

Chronic use of a yeast killing cream, can lead to other local irritations over time.

There are oral tablets Diflucan to get from the doctor, but they can be hard on the liver.
For people with Candida of the bowel, Nystatin is typically used. It comes in a tablet and liquid and is less toxic.

If you think you have vaginal Candida, I think the best way to approach it
over the counter is to use the new one shot applicator form(ticonazole-Vagistat) one a month for 3 months. Using a douche once a week gently that has vinegar in it will then
make the environment less attractive to Candida and it may go away.

Some Candida becomes resistant to creams, so they should be used sparingly.

It is best to have a doctor examine you. Here in the States there is a test you can buy to test yourself.
Many women can have irritations that are not Candida.
http://www.healthatoz.com/healthatoz...ovaginitis.jsp

The use of those steroids in high doses for long time periods like you had, Monica can predispose one to infection.

Use of high dose oral Thiamine helps the enzyme system that metabolizes aldehydes, so that may help too.