AF due today!

Louise
AF is due today, I have had no signs of her coming so far, but this is my second month off the pill so I'm not expecting it to be on time anyway, I don't want to take a test because I don't want to be disappointed!
I had little CM yesterday and glow tells me that it is unlikely that I am pregnant due to that, not sure what to do! Has anyone ever had little CM coming up to their period but was still pregnant?