alot of cat foods also have dyes in them that color the food/vomit the pink color. your cat could just have a sensitivity to the food. is it a new food? you could try a food for sensitive tummies and only give a little bit at a time but give it frequently. cats generally dont act different even if they are sick so if she does start acting different I would take her in to the vet IMMEDIATELY!
hi tess, if she vomited 3 times the reddish color could also be caused from irritation...I would wait a day and see if she holds down her other meals and if NOT or if you see anymore bloody vomit than I would sure take her in for some tests...
good luck, let us know okay...if ever in doubt about her condition do not hesitate to take her to see a Vet asap.
Pinkish brown vomit equals blood in her tummy. Go to the vet.