<human>: My mini schnauzer, Riley, started having urinary problems not long after he turned 1 (only just a few weeks ago).  He would pee in the house uncontrollably, and after taking him to the vet and getting a (costly) analysis done on his urine, they found crystals (a bad sign) and diagnosed him with two different UTIs, then put him on a prescription diet along with antibiotics.  He went through all his antibiotics as of about a week ago, and suddenly has started peeing in the house again.  Today he was standing right on my bed and just let it go.

You can imagine how frustrated I was, but then I started to get really worried.  He's from a shelter, something I was wary about, since I wanted to avoid health problems.  The breeder I had considered buying from told me that congenital problems would show up between 1 and 3 years of age, which would make him right on time.  After doing some googling, the outlook after kidney failure is not good at all.

So, am I overreacting?  Will this go away with more antibiotics, or by adding fish oil, or by doing more medication?  I'm a 20 year old college student, so my parents have been helping with some of the vet bills thankfully, but they aren't going to pay for everything.  Will I be subjected to costly tests and procedures, only to have my heart broken to put him down in a few years?  Did I walk right into this problem by ignoring the breeder's warnings and going with the "cheaper" option of a shelter dog?  I love Riley so much, I don't want him hurting and I have already gotten into the mindset of him being around for the next 15 or so years.  Just the fear of him getting hit by a car has been giving me huge anxiety, I can't even take him off a leash (even though he stays in the yard) because I'm so afraid of him dying a premature death... Can anyone with any experience give me any insight on his kidney problems?

Obviously nothing is going to make me want to give him up, I just need a little advice on what to expect.

Provide a brief overview of the text.
<bot>: Thought my 1 year old mini schnauzer was over his UTI/kidney problems, but he just had another accident tonight.  Irrationally afraid of him dying prematurely and about to flip my shit.