Pregnant ?

So I'm on Gildess birth control . ( for about 3 months now) and i try to take  it at 10:30PM but sometimes I'm a hour or two late on taking it .And usually during the third week on the pill I get reddish brown discharge for the whole week then my period comes . This month I have had just a little bit of white discharge and I started my inactive week yesterday ..still no period . Could I be pregnant ? I am sexually active but my boyfriend has never ever cum inside me . Is there Any possibility that I could be pregnant ? I'm kind of stressing over it ..