Balanitis (inflammation under the foreskin) is common in uncircumcised men, and often is due to yeast -- but it's not an STI. You probably did not catch it from your sex partner:  yeasts are entirely normal under the foreskin and on the skin of the genital area. When yeast causes symptoms, it usually is not because it was caught from a sex partner. That's why your doctor advised it is OK to have sex:  you have nothing that will harm a partner. Should you use a condom to present further irritation? That might be a good idea, but only for comfort, not for disease prevention. The smart thing is to avoid all sex, either oral or vaginal (with or without a condom) until your penis is back to normal. But this forum only deals with STIs, so this is outside our expertise.

Im sorry I can't be more helpful, but I hope this information is useful. Let me know if anything isn't clear.

HHH, MD

1- I dont' have a STI

2- I can have sex with a partner without risk of harm her 

3- To avoid further irritation better avoid sex until full recovery

is it correct?

Jut one last question: I have a plan to meet a sexual partner next week but I never use condom with her during oral sex (vaginal sex always protected).

Could she get infected by yeast infection in her mouth, performing fellatio to me? thank you very much.

By the time you meet your partner, apparently you will have been using the antifungal cream for a week or more. Even if irritation persists, the yeast itsaelf probably will be gone. Oral sex will be safe for your partner.

That completes the two follow-up exchanges included with each question and so ends this thread. I hope the discussion has been helpful. Best wishes and stay safe.