Ive just recovered from yeast infection 2 weeks ago. and ive masturbate on one of those days. but will my yeast infection come back?

Probably not: Masturbation is not usually associated with yeast infections. However, if you use accessories like vibrators be sure they have been cleaned with a mixture of 50% water and 50% white vinegar. If you continue to get repeated vaginal yeast infections be sure to consult your MD to determine if you have another health risk for this. Ask your MD for diflucan (fluconazole) each time you are given an antibiotic.