Side Effects after Hormone and Radio Therapies

My husband was 74 when diagnosed with PC in October 2023.
The following is information from the consultant:

-------

Gleason 3+4 prostate cancer predominantly on right anterior biopsy cores.
Significant Gleason 6 on the left side PSA 14.6 DRE today T2c
The amount of pattern 4 is relatively small.
T2 N0 M0 and organ confined to the prostate

-------

HT started February 2024 and RT of 20 sessions during Jan-Feb 2025.
HT stopped after the RT, therefore, no treatment since Feb 2025.

As someone who has a deep phobia about illness, particularly cancer, and hospitals, he has gone through this procedure remarkably well. However, he has not attended follow-ups - he is so frightened in case the condition has worsened, spread, or some other form of cancer is found, he does not think he would be able to cope.
He experiences deep fear, anxiety, worry, stress, although this is getting less now.
Beer/cider help to give him some feel of 'normality'. He is conscious of alcohol consumption and controls that.
He has Valium to help with this sometimes but is aware that this is addictive, so he takes only on 'dry' days with no alcohol - maybe after 7-15 days.

On the positive side, his sleeps are better now, with no horrid dreams; and as he cannot do anything physically for more than a few minutes, much of his time at home is watching various TV channels ... thank heaven there is a lot of choice these days! so we tend to go out most afternoons for 3-7 hours depending on distance; it gives some feel of normality and it is helping.

Side Effects:
Of course, libido disappeared, but there have been intermittent signs that something is coming back.
Occasional hot flushes, physical energy is extremely low, and has horrific mental goings-on.
Around Aug/Sep, his breasts started to hurt.
The right breast has not hurt for a few months, but has started a little lately, and the left breast is very tender.
His testicles or perineum ache from time to time.

Q: The consultant stated T2; but with the G 3+4 on the right, would that be correct?
Q: Are these side effects due to his testosterone returning?