Ph balance

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what are the best, most affordable probiotics? I have the worst time trying to keep my scent neutral or natural smelling but something is always off! I use boric acid supplements when i need to (usually right after my period cause my body seems to never regulate after) I take cranberry pills, eat relatively healthy(avoiding foods that change your scent as much as I can) and drink a lot of water, I try not to wear underwear, I eat Greek yogurt, I also rinse and clean with only water, I just feel hopeless! I don’t have insurance and I can’t afford a drs. visit, just want to feel comfortable! any tips would be wonderful. also have to get this sorted out before I see my boyfriend :(