1 Vaginal candidiasis (yeast infection) : If your discharge is white but thick and lumpy (think cottage cheese), it could be a sign of a yeast infection. 2  In addition to the change in texture and color, you may also notice itching and burning sensations.3  Yeast infections do not usually produce a strong scent. Most discharges with odor are due to bacterial vaginosis. 2  Vaginal candidiasis (yeast infection) : If your discharge is white but thick and lumpy (think cottage cheese), it could be a sign of a yeast infection.