Meant to have period but have white discharge instead why? what does this mean?

Sexually active? If : Yes take a pregnancy test. When pregnant, vaginal discharge is thin, white ; milky. But because this is not a diagnostic symptom, a pregnancy test should be taken if you miss your period. Leukorrhea is normal vaginal discharge (d/c). D/c is composed of cellular debris, vaginal secretions ; bacteria ; is stimulated by ^ vaginal blood flow ; ^ estrogen. D/c ^ is seen w ovulation (clear/stretchy), .