she is rather sick and dizzy, and may fall over
Put what on the cat? This question is incomplete so is impossible to answer.
Age? Indoor/outdoor? Did he recently fall? Is he normally healthy? Do you have kids? You didn't give *nearly* enough information for anyone to help you, but I'll still give you the best answer: bring your cat to a vet if he's been limping long enough to raise concern.
you need to re-aline the wheels
A shaking cat should be checked by a vet. Shaking like this could range from seizers, nerve damage from being hit by a car, hypothermia from being out in the elements, rabies can cause shaking as it attacks the nervous system, or even distemper.
Well, I don't think there's anything wrong with me, but there might be something wrong with you.
They are most likely growling
his spleen is about to burst
diarea
it could be your engine mounts are needing replaced
If the vet was unsure of what was wrong with your cat, then maybe the vet gave your cat the wrong kind of medication so it didn't cure your cat. If the veterinarian is unsure of what is wrong with the cat and medicated him anyway, he is obviously incompetant and you need to see a different veterinarian. The wrong type of medication could seriously harm your cat and to prescribe it anyway is irresponsible.
I don't have a cat either.
Probably you need to align the tires.