I have been treated 7 times in 5 years for BV. It just keeps recurring. My husband hasn't been treated the doctor says men can't get it so therefore should not be treated for it. But can him not being treated be the reason it keeps recurring with me?

It is not completely know but sexual partners among other things can be cause.

Read this.
Bacterial Vaginosis (http://www.idph.state.il.us/public/hb/hbbv.htm)