I just checked with Dr. Google for you, the light yellow CM could be an early pregnancy sign, or PMS... err... just like everything else. FX for you that it's the former. You're still really early for new cycle to start, so all I can suggest is keep calm, my ttc sister!
And a thought on people who spontaneously conceive... we are friends with a couple who accidentally conceived, they're trying to be happy, but honestly freaking out a little. I've also discovered that I'm the only person outside the immediate family that knows about my BF's m/c and D&C... and accidentally discovered one of my friends is 6 months off BCPs and having a horrid time TTC (and I had to sort've lie by omission) to give her tips, you know things I looked up for my "friend" - I'd guess for every person that you hear of with no problems ttc, there's at least one more you know that's struggling that you don't know about. Each new life is an independent event, it sucks sometimes (like I don't love my sorority sister complaining all the way into her second trimester), but chin-up, my friend, ours will be here someday... hopefully, SOON!