I would recommend seeing your doctor. If you are having discharge, you could have an infection....I don't know about being prenant...I'm in the process of trying! Lol
the best thing to do is see a doctor because either way, you will need to make an appointment. If you have forgotten to take your pill for 2-3 days, then it's possible the contraception will have stopped working. Where were you in your cycle...If you are at the end of the month, I wouldn't worry....
I now know how hard it is to get pregnant, temperatures have to be right, you need to be ovulating, there are so many other things that have to be right to conceive. See a doctor and get checked out. I hope you get the answer you want.
Let us know how you get on and good luck.