Help: I came back POSITIVE for BV.

Sorry for my ignorance. Never bad this before and I feel gross…I know it’s not an STD but I can’t help by ask why I or how I got it?

I’ve gotten really bad yeast infections but never have I had BV or a UTI.

Been with my bf for over 5 years and this is the first time I have had BV. I went to the doctors because I was itchy. She ordered a full STD panel and everything came back normal except I came back positive for BV.

She explained to me that it is not an STD and it is not spread through sexual contact but idk how I got it.

She sent me this information.

A month ago, I got prescribed antibiotics due to my

Ear infection. Maybe the antibiotics killed all the good bacteria?

Also, my bf and I barely started engaging in oral sex….ive always given with no issue but recently he’s been giving me oral so idk if that could affect my Ph??

I never had any pain, or odor…just the itching.