Re: Feeling sad
Rest assured that you are not showing a PSA trend that would indicate prostate cancer. Maybe you have some low grade prostatitis, or maybe it's incipient BPH. Yes, there are some very rare forms of PC that sometimes hits younger men and never show a large increase in PSA, but that is unlikely. If it were that, it might show up on a PCA3 urine test (not FDA-approved yet). I would be surprised if your Uro wanted another biopsy, since your PSA hasn't really changed in two years. In fact, I'm surprised he even suggested the first biopsy. Two biopsies within a year can be damaging, and may violate his Hippocratic Oath to "do no harm."
I'm sorry to hear you're depressed. When we are depressed, we tend to ruminate over things, blowing them up in our minds. It makes us worry, which brings us down even more. Maybe your back and testicular pains set off this bout of depression and generalized worry over health issues. Whatever caused it, anti-depressants and talk therapy may help. The last thing we need is to be ill AND depressed.