Get to the vet asap, don't wait, longer you wait, the higher the bill, the worse the problem, please just call you vet and ask for payments, sometimes they will take a series of postdated check, or will debit your account on scheduled dates you've worked out w/them, and if you cash basis, just beg for help and pay your tab on time, never late, so you can build a repor w/vet's office for the future...
Infections start in one location, but, can travel to another, especially lung infections, she is probably still carrying the bacteria, yogurt is a myth as far as I am concerned for humans or animal on female anatomy yeast infections, yogurt in a great thing to use to put the correct amount of the right kind of bacteria in your stomach, digestive systems in human or animal, too much yogurt can kill of the bacteria we all need in our systems..
Panting is a sign of severe stress, like pain, illness, nervous, or hot!! Which one does your dog fall in? Too much pain or stress, can cause a dog's heart to enlarge, different than humans, dogs can endure million times more pain than us, they just take it, till they drop, panting not a good sign, its a sign of distress, I am scared for you, your dog from what you say, is in trouble...Please, please try to get your vet to work w/you on the money, you just might be surprised..welcome to the dog forum, keep us posted...
The time to borrow the money is now - BEFORE you have something really serious and expensive to deal with. Look at it this way: if this dog were your child, would you let lack of money stop you from finding medical care? That's what you're facing right now. Obviously something is wrong, and you have a very stoic dog who doesn't "tell" you when she's sick. You need a professional to diagnose thise problem and determine proper treatment. There is no point in speculating while she gets sicker and sicker.
Give your regular vet a call and see if a payment plan can be arranged or if they offer Care Credit. CC is a line of credit to be used only for medical care for humans or pets. Your local SPCA or Humane Society may even offer low cost vet care or be able to refer you to a lower cost clinic.