Thats not a true statment. You can not tell by a yeast infection that you may be pregnant. Yeast infections is a common thing for women. We get them by, not changing out of wet clothing, not drying our cat with a dry off towel well, by wearing too tight of cloting, or wearing panties that dont have a cotton lining. Some are caused by your body producing too much anti-bacteria liquid. And even using the wrong kind of soaps, even colored tissue. Its nothing out of the ordinary, it just some we women have to stay on top of. :)