Cat Pregnancy Questions?

Hi,

I'm hoping someone can answer these questions!

These are two different cats:

1. Generally speaking, how old can a queen be and still be going into
heat and producing offspring? In other words, please God, is there
such a thing as feline menopause??? :-/

2. I've got another younger cat, first time queen, shows all the
symptoms of pregnancy - more than a month along. However, every
few days, she's spotting blood from the vulva. Not much though, and
otherwise she acts fine. Is this normal, or should I be contacting
the
vet?

I'd so appreciate some answers!

Skye