I took Plan B on November 24 about 18 hours after intercourse since I missed 2 pills in the beginning of the pack. Today, December 12, I just experienced some discharge that seemed to be cervical mucus with tinges of brown in it. I take my birth control pills for 3 months in a row, so if I did not continue to take the pills and go through the placebo pills this week I would normally get my period on Wednesday (December 14). Is it normal that I am experiencing this kind of discharge?