Shower head water

So I tried the shower head to masturbate and it worked very well and I liked it and not knowing at the moment to not get any water in the vagina I sat under the running water having it gushing into my vagina amd it felt so good but then after I was just ready an website saying it is a big no no and it's very harmful to the vagina because it takes out all the good bacteria and can lead to infection or worse ... I don't know what to do and I'm really scared please help!!