Cm? Too much?

How much cm is too much? Usually I have very little if any cm. Last night I ran a bath (not to sit in but to shave my legs) and shower. I dropped my razor and when I picked it up I noticed something fairly large hanging from ma cooch. I did clean up but I was absolutely stunned to see a very large string of cervical mucus . I mean longer than my hand and thicker than a nickel, large. It was egg white and totally looked like I was in my fertile window, which I am, but was significantly larger than normal. Should I be concerned or just ride this one out??