yeast infection

so I'm having kinda a pregnancy scared bc me and my bf had sex without a condom but he pulled out. this was exactly 7 days before my estimated ovulation date. now it is 3 days after my estimated ovulation and I really randomly feel a yeast infection coming down there. it could just be irritation but my vagina is so messed up I get atleast 5 yeast infections a year. I've read online that yeast infections are early pregnancy symptoms but the only people that have said they got a yeast infection after conception were the ones who have never had a yeast infection before. help! am I pregnant!!??