The vagina

I’m going to get straight to my point. Recently my vagina has developed this patch of white dryness around my opening. It doesn’t burn or itch severely, and once I bath and place vaseline around the area it disappears. What could it be? I don’t know if this bit of TMI helps but my boyfriend and I have sex almost everyday with condoms. Could it be the condoms or a disease? I’m asking for different opinions and maybe someone is also going through the same thing?