Pale green discharge with occasional itching but no odor. Smells somewhat sour when it dries(yellow). I've always had discharge since I was around 12 years old but I never payed attention to it so idk if it's always been this color. looking at it now, it doesn't look normal. I read this could either be mild BV or severe yeast since most stis have a foul odor. Is this true? I'm scared, please please help