Hello Mr Ed,
Like francij1 says, you are going to have to wait for the results, but I would say your symptoms are more like those of prostatitis and high anxiety than they are of prostate cancer. However, no one can assure you until you have the test results.
Urine (or semen) samples often show no infection in the case of prostatitis, and then trying arbitrary antibiotics is often not successful at treating. Momentary relief can come from antibiotics, because they often also have some anti-inflammatory properties, even when any bacterial infection isn't reached by them or isn't sensitive (killed) by them.
One of our urologists at The FOPS prostate support group recently commented on young prostates feeling harder anyway, and often being mistaken by GPs for a concerning texture.
So, unfortunately we can't tell you you don't have prostate cancer, but the symptoms you describe and the treatments you've had don't rule out prostatitis (with anxiety).