My PSA level in 2018 (when I was 60) was 3.58 and when it was tested again on 10/03/21 it was 5.32. A further test on 12/04/21 found that my PSA had increased to 5.76. I was, as a consequence, booked in for an MRI scan and when that showed a 1.5 cm lesion in my prostate I was then booked in for a biopsy on my prostate. Fortunately, the biopsy results show that my cancer is very slow growing and it is likely that no action will be taken at this time. The point I am trying to make is that it is certainly worth getting checked out so that things can be ruled out and so, if necessary, early effective action can be taken.
My consultant told me that 1 in 5 men over 40 have prostate cancer, that most men over 60 have it and that all men 80 & over have it. Thirty or more years ago men were not tested and many had it without knowing. For most men, you are more likely to die of something else rather than of prostate cancer.
As mentioned by Ian & Chris, there are all sorts of reasons for a slightly elevated PSA and your PSA level is still very low. Bob Monkhouse's (game show host/actor/writer/comedian) PSA level was well over 1300 when he was tested back in 2002.
Let us know how you get on with the MRI scan