Hi - sorry it's taken so long to reply since I viewed the thrad this morning, busy day today!
I would not be overly concerned if your cat is clingy. She is sensing your hormonal changes and also that your focus is shifting from her to elsewhere. I had 2 established cats and one relative newcomer on the occasion of both pregnancies/births. Each cat exhibited different levels of concern over the changes, in each case the rescue newcomers feeling and behaving the most unsettled.
I suspect that your young cat, being also a relative newcomer may be concerned about it's 'pecking order' and is therefore trying to get close to you as a result.
It shouldn't really cause a problem even when your baby is born. The cats will live with it, and get used to having a baby around. And if they don't like it, they can, like mine, just go and sit in another room in the house!
Don't get yourself worked up about it, as both you and the cat will be stressed as a result. Oh, and whilst you need to be watchful of where your cats are, don't fall into the trap of buying masses of expensive cat nets for cots and prams; most cats will run a mile from an unpredicable baby!!
Good luck with Frankie and the result of your pregnancy
