Sorry I think that's awful.
If you take on a pet then you should do so for the rest of its life no matter what happens. No matter how much you have to pay in vet bills, you find a way. No matter if you have to move house and most places say no pets, you find a place. And if you find out you're pregnant, well you took on the animal, you just have to find a way to cope.
I've just got a full time job and I really am struggling with all my pets. I wouldn't dream of rehoming any of them! The first thing I do when I come home is sort them all out, clean them, do medicines, give cuddles. I don't really have much time for myself but too bad, I decided to have nine pets so that's how it is right now.
Pets are like kids, you don't get rid of your baby when you find out you're pregnant with another one. You just find a way to cope and if you're good you find a way to enjoy it too. :lol: