Thanks for the query.
can alter depending on the hormonal fluctuations in the menstrual cycle.
If the discharge is excessive in quantity, foul smelling, altered in color it usually indicate the possibility of some infection.
Pelvic inflammatory disease
can cause pain abdomen, vaginal discharge etc.
Norigynon is having 0.2% of failure rate and it can also cause white discharge as side effect.
So if you want to rule out pregnancy
better go for blood test
If comes negative better to consult gynecologist once to find out the possible cause of your white discharge.