PSA levels results from 9/3

Went for my followup PSA test last Friday and the results were 3.46, down from 4.1 (3) months ago and 3.5 (6) months before that. When I think back on it I had my blood test two weeks after I had my DRE exam with my PCP. Read somewhere that disturbing the prostate can also increase the level, so I wonder if that might had spiked the level. Since I am approaching the majic number of 4.0 anyway do you think I should insist on seeing a urologist anyway ? I am relieved that the level is back down. David