Look into candida symptoms. Could be why you keep getting infections!
Okay try diluted apple cider vinegar, use it your bath water, try some pH balancing wipes, look for cotton/ organic, with the least amount of chemicals you can't pronounce, try it for about a weak, don't consume too much sugar either, take your probiotics (if they're not helping, stop em, I've had a few I wasn't too found of), don't do the yogurt tampon thing - yogurt has sugar; I personally had a bad experience with it. You can also get candida cleanses at local health stores... but you have to cut the sugar and follow directions- I'm not a fan, they can be expensive, but it's an option.
OTC creams and pills never worked for me, same with prescriptions, every time I have to much sugar I get an infection, it's annoying, I usually look for food with less than 10g of sugar/ serving.