My cat has had a lot of swelling between her hind legs,we have done a 5 day antibiotic course, because she had stopped eating and was vomiting. During the antibiotic course she started eating more than she ever did. But two days after the course ended, she is back to the no eat and vomitting stage.

The swelling seems to die down sometimes and sometimes she is back to the same. The area seems to be soft and small boils (three can be seen)

My vet told me that it would burst from these places, but it's taking longer than we or he expected.

What should we do?

If this is infection, ask him if he could lance them, I would think draining them would help clear them up faster. When my cat has gotten into fights and had an infected site, the docotr usually opens it up and allows the infection to drain, sometimes he will pack it with antibiotics as well.

Having been through a case of boils myself (and no, it's not a pleasant experience), doctors generally prefer to let them come to a head naturally, since it does less damage that way. One thing that might help is using hot compresses on them. This may be more difficult with a cat, since you want it to be just on the edge of what you can stand heat-wise, and the cat can't tell you if it's too hot. But give it a try, and see if that helps any.

The infection may be a resistant strain of infection,which is on the rise.Perhaps injections of a higher potent antibiotic will help knock this infection out completely.Cats are also at risk of reinfection from grooming the area the infection has invaded.We have drained cats with huge abcesses before by sticking a syringe with a 20 gauge needle directly in the pocket.The fluid is usually yellow with a bloody tint,and the amount that comes out is unbelievable.The cat usually feels much better after extracting all the fluid because of less pressure and less fever from the infection.I hope your cat shows improvement soon.:)Ask your vet if this is a treatment that may help your kitty.