What does it mean when ever i finish my period i always get this white discharged and it smells?

Please see physician: may be be normal but need to make sure you do not have bacterial vaginosis or yeast infection

Vaginal thrush: Based on your limited description of an otherwise asymptomatic white, malodorous vaginal discharge recurring after menses, you most likely have vaginal yeast infection which can occur which the menstrual hormonal changes. You can treat this with over-the-counter and prescription medications as well as good hygiene.