testicle pain a sign my cancer has returned?

Hi I had my last decapeptyl injection in March 2023 after 36 doses of radiotherapy since when my PSA has gone down to its lowest of 0.05 that was in June 2024. the last two PSA tests were 0.07 and most recently 0.34 so its going up, Ok its still a lot lower than the outset of  21.4. my question is,

I have in the last 6 weeks experienced occasional pain in my right testicle  but only at night in bed, it sometimes wakes me. could this be a symptom of the return of the cancer?