I’ve been diagnosed with bacterial vaginosis twice after sex with my husband - both times we used the pull out method and there was a year with no sex in between. We’ve been married for many yrs and it only started happening in the last few. I’ve seen the research that men could pass it back to you but how did I get it in the first place? It only came on after sex and I’m sure he hasn’t been with anyone else - am I being stupid and should I be thinking he’s cheated?