TMI (no pic!) what does this sound like, help?!

Nira • Wifey.Mommy.Happy
So i ovulated about a week ago (wasn't temping or using OPKs so I don't know when exactly or if I did for certain) 
​For about a day I had brown CM that only showed when I wiped.. And today, there is nothing. I have been having slight cramps, but nothing painful, just uncomfortable/annoying.
​Af isn't due until about the 3rd.  
​Why did my body do that, what's going on?!?! ????