Thanks for posting your query.
When you used condom you are protected.
It is of real concern if there was tear in condom or slippage before removal of penis from vagina.
Also it is advisable to use double condom in case of intercourse with sex workers.
Western blot is the confirmatory test.
If it shows negative then it suggests that you are not contracted with HIV
It is advisable to start your sexual life post marriage.
Hope I have answered your query.
Wishing you good health.