lol hes over 21 dont worry.. perfectly legal but thanks guys
be careful what you say...just how YOUNG is this KID???
Ask your doctor to blind treat your partner for yeast. Assuming you're the female and your partner is a male, he may be carrying it under his foreskin and transferring it back to you each time.
Another possibility is lube (if you're using it). Many lubes have sugar products in them, which can promote yeast infections.