What ear meds did the vet prescribe? Can you take your kitty for a follow-up vet visit (sometimes there's no charge for that) to get his/her opinion on these new symptoms and if they might be related to the ear infection?
Would be difficult to say whether the symptoms could be due to a pregnancy without a vet exam. How long ago did she get out? If it wasn't too long, perhaps you could consider getting her spayed now to prevent any possible unwanted kittens. And depending on what meds she was on, the health of the fetuses could also have been compromised. You really need to talk to the vet about this. There are financial aid options if you qualify: