Sounds strange, but I have had women concerned about the amount of discharge they produce every month and treat themselves for yeast. Upon examination, the discharge comes around ovulation and is on the stretchy side.
Of course, there are a number of sexually transmitted diseases that also cause vaginal symptoms. Trichomoniasis (Trich), Chlamydia, Gonorrhea and Syphilis require medical attention and antibiotics. Probiotics and cotton underwear will not make these go away.