PSA test after radiation

Treatment
Radiation ended at the end of March. Many of the symptoms he had was manageable and have since gone away. Some bowel issues, tenderness and mostly fatigue.
We have been waiting patiently for the PSA test to see if it worked. The first test that came back unfortunately did not show an improvement. Though slightly up, his PSA is higher than before he started radiation. We are still waiting patiently. Now it’s to see if possibly the radiation is still active and we just tested too soon.