Anything is possible Bella, but I've had fertile CM shortly after baby, and not become pregnant. DH and I do not use any birth control. It is not impossible that you could be pregnant, but it is HIGHLY unlikely, especially since your baby is still nursing around the clock. Try not to panic - just go get a few pregnancy tests, and take one every few days, starting in 2 weeks or so, to put your mind at ease. I always keep 3 or 4 dollar store tests in the cupboard for panic attacks.
yep, this is us too. for some reason my body just has fertile CM but we have been able to not conceive (and we dont use much protection...the odd condom here and there).

I dont think there is any worry, I am certain that it is just the body readjustment. but it is so hard to know when you havent had AF return yet to know where you are your cycle...i kept a handy packet of HPTs in the drawer for those moments of trepidation lol.