I had sex on Jan 12 and 13. We did it four times but all those times were protected plus he pulled out, we checked the condom thoroughly and there were no leaks. I have a normal menstrual cycle. On Jan 25th, I got brown discharge but it was mucousy and very light, that's it. With that, I've also been getting slight cramps a week before my expected period. Just to add in, I took plan b on Nov 1st 2015, bled four days later, and then my next period was delayed a week. I just wanted to know what this blood discharge means and if the plan b affected my cycle at all?