What Causes Itching,burning And Passing Of Green Liquid Discharge From Vagina?

Ok soo embarassing but here it goes. I have been experiencing some really chunky whiteish/light green discharge coming from my vagina, I feel itching no burning, no serious smell. Maybe a little yeasty but I have used this clear gel given to me by my obgyn to treat bv and its not working please help tell me what it may be or what I can do oh yea I also had unprotected sex with my boyfriend 2weeks ago