Proton Therapy: any long term side effects? Any regrets?

I went to Mayo's, Rochester. They recommended 5 Proton treatments. Being over 70 years of age, surgery was not an option. In preparation for the 5 Proton treatments, I received Space Oar and 2 tattoo markers smaller than the head of a pin. The oncologist told me ahead of time that I would not need to be lightly sedated for the procedure unless I wanted to. When the tech was ready to begin the Space Oar placement, he highly recommended that I go along with sedation. I am very happy that I decided to do that. Before being put in la la land I was told they would be taping my penis and testicles to my abdomen to keep them out of the way of injecting the Space Oar. Due to the light anesthesia, I was never aware of what was happening. I could hear the voices of the other 3 people in the room, but not hear what they were saying, thus being spared the additional embarrassment from having the procedure along with comments. The 5 Proton treatments were completed Nov. 2023. So far, have not had any permanent ill side effects. I did experience dry orgasms but only for about 1 month. I also had slight problems with urinating, but 3 weeks of Flo Max took care of that. There has been no bleeding or any other problems that I know of. Subsequent blood tests every 6 months have revealed cancer to be undectable. I have never had to get up in the night to urinate. The 5 Proton treatments were completed in less than 2 weeks which was a huge plus since I live 400 miles away. Mayo's and American Cancer Society need to be commended for providing free lodging while undergoing treatments or Chemo.

@neilmartin Yes, I would really appreciate the data that you are referring to. Thank you!

@neil martin @dderiso Hi guys , I’d also greatly appreciate this specific data please ! Thanks !
re proton & spacers if you would like to review it, it is quite illuminating. California proton speaks to it as well, late bleeding / proctitis are no fun. If you would like the study I can forward.’ I
I haven’t posted before , but hopefully I’ll find where response is …. Thx