cat throwing up and not eating.

My baby is ten years old (human years) When got up this morning there was 6 different places where she threw up at. Most of it yellow. Well I tried feeding her but she won't eat. She won't even go to the food plate. Where as nomally she's tripping me trying to scat in front of my feet to get there before I do. It's lunch time and she's still not eating. She's also thrown up 3 more times sense then. The last time it looked like she had a hair balll trying to come but but it looked to me like she swallowed it again. I couldn't see very well but it did looked like a hair ball which seems to be in a tubular shape was hanging out of her mouth ...but just barely... and then she swallowed.. I'm very concerned. Do Ijust watch her for a while. I sure dont have the money to just rush her to the vet over a hairball. This is the first and only cat I've ever had and I've raised her sense she was only a month old. The mom got sick and I took over to bottle feed her. So I dont have alot of knowledge of cats...just a few things from having her. So any help is appreciated.

I am a newbie to cats and I could be wrong but that just doesn't seem like a normal hairball vomit. Most of the time when mine does a hairball I don't even see her get sick. I just see this thing in the floor. My gut tells me a vet needs to be seen. She could have gotten into something without you knowing. Hopefully one of the wiser people can give you some advice. 

do you have a vet who you can get her looked at? Does your cat eat toys or string? I had one who ate a toy with string and did exactly what yours did. We had to get xrays and we had her put on iv fluids as we couldn't tell if the object had moved into the colon yet-sometimes xrays don't show much. I would recommend a vet to palpate her and xray that belly.

How was she yesterday? Any changes in her habits in the past day? Mine sleeps elsewhere when she doesn't feel well.

Also hairballs don't usually have yellow vomit-if its not chunky like fresh ate food then its food that has sat in her tummy for awhile and vomit. They could treat conservative with Sub fluids and anti-nausea meds to wait and see but you really need to bring her in. cats get dehydrated very fast..in fact when my cat ate that toy=my boyfriend never told me she was vomiting all day..she puked at 5:30am just before I was out the door but he never said anything until I got home at 5 and she was sitting in one of the beds under my table and looked pitiful..we had about 4 vomit spots so I didn't wait=took her to the er vet to get fluids..good thing because by then her kidney values were elevated...We dodged the bullet for surgery for a foreign object obstruction but she said she could have sent her home with sub fluids but I didn't feel comfortable with this..we kept her there for 24 hours..

at this point a vet visit with a vet feeling her tummy is very important. they would be able to guide you on what treatments they recommend..from my experience they will want xrays and sub fluids at the bare minimum

I agree with @foxxycat    Yellow vomit usually means, in my experience when it isn't the color of the food...  that they ate something they shouldn't have.  In my case my Fatty Phil ate his toy.  He ripped it open and ate the cotton stuffing.  He threw up yellow bile for 2 days..not continuously but he did.  Every so often there was a cotton piece until he threw up the whole thing.   I would take him to the vet as soon as you can.

This can be also be a symptom of inflammation.  My IBD kitty would do this with flares.  He had his first flare when he was only 18 months old and the vet thought he had swallowed a foreign object.  His flares just had the symptoms that mimicked foreign body ingestion, he would even be constipated.