The PSA isn't radically high, or rising dramatically. It's still not even at 1, or close to it.
Can you (assuming you're the patient) get an appt with your oncologist while you wait for the urologist?
I found an article about PSA after radical prostatectomy. Ideally, it will be undetectable, or less than 0.05 or 0.1 nanograms of PSA per milliliter of blood (ng/mL). Yours is below that level. (https://www.healthline.com/health/prostate-cancer/psa-after-prostatectomy)
It's not a concern, apparently, unless the result is greater than or equal to 0.2 ng/mL and it’s risen on two separate tests taken at least two weeks apart. Then it's called biochemical relapse. I'm not a doctor nor a prostate cancer expert, but it doesn't seem like this is what's happening.
Definitely check with your oncologist, or maybe the urologist who is covering for your regular one.