vaginapagina | lots of sex and yeast infections

Can having a lot of sex cause a yeast infection?

I am in a long distance relationship and I went to visit my boyfriend last week, and after more than 7 months with no sex, we had sex 5 or 6 times a day for a week. The last day I felt a little itchy moist (when not aroused), I figured it was just chafing and now that I'm back home I'm pretty sure its a yeast infection and used one of those one-day treatment things. I am always wet when we have sex, but 5 or 6 times a day is a lot and sometimes I felt a bit sore, but not itchy until the last day. It hasn't been that long so I don't know if the YI treatment worked, but I was just wondering if this is normal (for lots of sex to cause a yeast infection)? In case it makes any difference I go off the pill when I am not with him, so I had just started it up again the month before I went (I read that it can sometimes weird out your hormones and encourage yeasties), we are not sleeping with other people and do not use condoms (so latex/etc. allergies are not an issue). I've gotten UTI's from sex before, but never yeast. Should I tell him to take something in case I passed it to him? I'm not going to be seeing him for another 5 months at least, so that should be long enough for my vagina to get back to normal.

Thanks.