If she's been vomiting for a day and a night, Ginger, I'd be thinking vet - in case she's ingested something she shouldn't have and is trying to upchuck it as the only way round the problem. The odd vomit is common but not so many.
Does she go outside? I'm wondering whether she could have hunted something and have a bone or so stuck.
My cat has been throwing up for the past day and night. This isn't like her, she'll sometimes be sick if she's eaten too much but it's usually a one off. What can I do to help her feel better? Any ideas what it could be? As far as I can tell, poo is normal. She seems to be herself and doesn't seen to be sleeping more than normal, but normal for her us about 23 hrs a day. I'm worried for my little fluffy one