Thanks everyone for your support and advices! I will definitely call the vet tomorrow and ask for another diet, and I'll tell her about the vomiting.

Luckily, she did not vomit again and...

[SIZE=large]YAY, she pooped this morning!!! [/SIZE]
But I have to admit that I gave her a spoon full of Sheba and a bit of milk yesterday which cannot be a long term solution. I really hope things will work better with the canned s/d food or another diet.

Anyway, Luna seemed to feel relieved after she pooped, minutes later, she got one of her toys and started happily playing which she hasn't done for days!

Kirsten