D.P.
C.,
I know you are feeling heartbroken and disappointed, but I agree with the PP--get a second opinion. It will give you some time to get your head around this, if, indeed it is true. There are menopause babies!
Please keep in mind that there are lots of other ways for you to add to your family--fostering, adopting, etc. You have so much to offer! Maybe you're being lead in an alternate direction for a GOOD reason! :-) Maybe the best is yet to come! Keep positive.