HELP... did anyone get Yeast infection before bfp?

Mom of 2

so ... TTC#3 .. me and the hubs had sex in my fertile window of course unprotected... maybe 2 days after ovulation I started a yeast infection... the only time I had one was when I was pregnant with my son i got bad ones ... since then never had another up until now..... I actually couldn't believe it when I saw my underwear ... did anyone else get a yeast infection before you found out you were even pregnant ...