I am 10 days late on my period, white discharge and not sexually active? was on birth control to regularise periods a few months ago.

Discharge needs eval: Vaginal discharge requires an examination to determine the cause and treatment. Bacterial vaginosis is the most common cause and often has a vaginal odor. Vaginal itching can be a sign of a yeast infection. Since you have known irregular periods then being late on your period should not be a surprise. Why not go back on birth control since that worked before?