My cat got spayed on the 27th, she is about 8 months old. Since she got home, she barely eats, almost not eating at all. Her incision looks normal. She acts normal and drinks normal. But she started to throwing up yesterday and today too ( twice in total ), first time the liquid was yellow and today the liquid looks like it mixed with some pieces of dry food. That means she ate at night right ? Should I be concerned about this ? I called the vet yesterday they said it’s ok since she still drink and acting normal.