I took a Plan B on the 2nd I'm pretty sure I was ovulating so it probably didn't work, my discharge has been really crazy since. It's been clumpy and white, clumpy and yellow, foamy and yellow, very dry, thicker than usual, it really hasn't been the same color since it's been yellowish, today it was the consistency of nasal mucous and it was yellow and when it dried it was a light brown color. So is that a sign of early pregnancy or could it be anything else?