[katong]

What makes you say it's an yeast infection? Can you share the symptoms here?
Don't be paranoid. Whatever concerns you have might be unjust. Doctors in singapore are still quite ethical and you can just google for std checkup clinics. These doctors wouldn't judge you because to them, you are numb when it comes to seeing patients like your profile. They won't judge you. It's all in your mind.

Get it check and resolved for peace of mind. No point using vagilsil and hope it goes away. If you are sure it happened after the bbbj and it's an std, you would need antibiotics. Vagilsil only work on yeast and not bacterial infection.

You feel that you've learnt your lesson and won't want to take the risk again next time, then so be it. But get it fixed first should be your priority.