What Causes Vaginal Irritations With A History Of Bacterial Vaginosis?

I have reoccurring yeast infections! Me and my boyfriend had sex two days ago and I am irritated below, we used a condem & tried a water based lube. The irritation started almost immediately. When I wipe it looks like brown dead skin, & I have been told I had bacterial vaginosis like 4 months ago. I actually don t remember getting the prescription, could this be that ?