I believe I got a yeast infection from having sex with my boyfriend, and I'm kind of lost as to how I can prevent this from happening next time. I'm wondering if it's from the fact that we can have sex for up to two hours, or if it's because of the lube that is on the condoms, or if it's just because my period is coming on towards the end of this coming week, and my vaginal balance is just changing.Either way, my vagina is dry, and feels bruised, and I don't like this at all!
You should use water-based lubricants as opposed to petroleum based - this might be an issue. You mentioned that you're due by the end of this week - this could also be an issue because one of the causes of PMS is an increased level of progesterone, and a cause of yeast infections is an increase in progesterone levels. Cranberry juice and yoghurt sometimes help to clear this up.