Welcome to the forum, you will, no doubt, gets lots of useful information here. My husband recently completed a six-month course of Brachytherapy (internal seed implant). Three-month results were good and we're hoping for even better final results tomorrow.
Here is there we started ...
Gleason 6 (3+3)
In excellent physical health and no symptoms
Three month result ...
PSA down to 0.95
Six-month result to follow.
The surgery requires only one day in hospital. You will have an urgency to urinate and some burning (Flomax is a great drug to help with that). There will be some fatigue - with Brachytherapy you are essentially in treatment for six months 24/7 so there's not turning it on and off.
Good luck to you, do lots of research and make an informed decision.