Any other "Geriatric" pregnancies?

Hi,

I'm 40 and just found out I'm 5 weeks pregnant - this was unplanned...
I wasn't using contraception because it's always being blasted into us that women over age 36 have fertility that's 'fallen off a cliff' - apparently that's a cliche and pretty frigging untrue.

I'm shell-shocked...I was enjoying my fence-sitting, can't-make-a-decision-on-children life.
Is there anyone else out there who's "geriatric" and terrified of having an abnormal pregnancy/chromosomal problems et cetera?

Thank you for reading .