Help my cat seems sick

Hi my cat puked up her dinner last week(dry cat food) on 2 diffrent occasions. I was worried abit but she did not puke the anymore for a couple of days but suddenly the last 2 she has done it 4 times total. 2 of those times it was nothing but liquid and the other 2 were a mix of grass etc. Usually she seems fine after puking but the last time she was meowing loudly and pacing around. I do not have the money to take her to a vet right now but I am very worried and Im gonna have to leave her in a little to go to school for a while. Any advice would be great. Thanks in advance

also her are some pics if you would like to see her throwup from last night
http://img232.imageshack.us/i/99300871.jpg/
http://img80.imageshack.us/i/32082053.jpg/
http://img98.imageshack.us/img98/3426/55116301.jpg

My cat was puking every other day for almost three weeks until I figured out he was allergic to the treats I was giving him. Try changing something in your cat's diet and see if that helps with the puking.

What are you feeding her and is she using the box appropriately? When was the last time she pooped?

I haven't changed her diet at all expet I think my mom has been feeding her mostly dry food and I kinda wonder if shes been overfeeding her with it but other than she hasn't had any new kinds of treats.

I'm also not sure about her using her box as I also let her outside during the day and the box is clean. So I'm not sure if shes been going regularly.

If there's any way you can check on the poop thing, that might help. Often cats will throw up if they are constipated or have a blockage. Is she long haired or short? It could be that she ate something outside that didn't agree with her. Does she seem lethargic and not moving around much or hiding?

What food are you feeding her?

I checked her box and there was some poop so she most have went recently. She is a short hair and other than the throwing up she seems to be her usual self. Sleeping, following me around and purring when I pet her.

The only thing she has eaten receently since yesterday was dry cat food.

After she puked just a while ago(the 4th time) and was pacing she went to sleep for a little and when woke up was following my mom around and she for some reason gave her some milk. Though so far everything seems alright at the moment.

Well, the milk will probably make her puke! Most kitties are milk intolerant. It could be that she's got a hairball or she could be allergic to the food. It's very common for the composition in the food to be changed by the manufacturer. I'd try her on a different type of food to see if that changes things, but do it gradually as changing too quickly can also cause her to throw up and have diarrhea.

I told her the milk did not seem like a good idea but the good news is that since yesterday she has not puked. I bought her some soft cat food which she liked. I'm still waiting for her to use her box. The only issue other than that is her left eye seems to be bothering her abit suddenly. It's not opening all the way up :/

Well she just puked again. She went over a day and 3/4 but she finally did again. She hasn't used her box either. She did not puke very much either and from what I saw most of it looked like hair. Any suggestions on what else I can try?