Changes in Cervical Mucus

I had a very light spotting for only a couple of hours on November 11th. I thought that it was implantation bleeding. I took a hpt on November 15th and it was negative. Then on November 18th I had EWCM, that night we did the baby dance. I had mild/moderate cramping all that week. Now today (8 days after baby dance) I noticed brown tinged cm.

I am currently breast feeding my DS and haven't gotten any periods since his birth. So I don't know if I am even ovulating or not. I have never in my whole life experienced any changes in my cm now all of a sudden I am having all of this. I just don't know what to make of it. Any ideas?