It is normal to be concerned about
these things. In Canada they don't usually request a biopsy until the PSA goes over 4. The US National cancer Institute seems to agree:
"There is no specific normal or abnormal level of PSA in the blood. In the past, most doctors considered PSA levels of 4.0 ng/mL and lower as normal. Therefore, if a man had a PSA level above 4.0 ng/mL, doctors would often recommend a prostate biopsy to determine whether prostate cancer was present."
/www.cancer.gov/types/prostate/psa-fact-sheet#q3You may have some trace amounts of cancer as autopsies of cadavers of accident victims of men in their 50s indicate that about
half of them had small amounts of clinically significant prostate cancer. Most would happily live their lives without knowing about
it and die of something else.
I would suggest trying your best not to sweat it too much and use the experience as an incentive to live the healthiest lifestyle possible - healthy diet (low in red meats and high in fruits and vegetables), exercise and attempting to lower stress levels. You want to keep monitoring your PSA and I would suggest making it your goal to keep it well under 4.0. I wouldn't be rushing out for a biopsy as while it is a low-risk procedure it is not risk-free and your PSA levels are not exactly startling.