is it a bad sign?

I get yeast infections so easily, I can only use a certain type of soap to shower with, even if I don't use it on my crotch. I can only take showers, if I wear a swim suit I get a yeast infection. 
Why is it SO easy for me to get them? I had one two weeks ago that I treated at home and I went swimming and now I have another one. 
Oh my god this is annoying.