Drs will not tell you all side effects of treatment

I had HDR BRACHYTHERAPY.
I neer to give my self a shot for an erection, cannot orgams, lost an inch and half of penile length, have urethral stricture and a biochemical recurrence of pca with a psa of 4.13 currently. A complete failure of modern medicine
FYI.. started with gleason 7(4-3). One out of 18 point biopsy was 20% cancerous.