Unsure of what's next

Hello and thank you in advance for your input. I wish that I had found this group earlier. I am 55 years old and in good shape. In April of 2021, my PSA was 1.7. I did notice around Christmas that I was going to the bathroom more frequently but didn't think much of it. My yearly dr. visit in June of 2022 PSA was 4.6. PCP put me on cipro for 2 weeks. PSA went to 5.7. I was referred to a Urologist and he put me on cipro again for a month, doubled the dosage. PSA was 6.6. At that time, I did have start and stop problems urinating. August, I had a biopsy and my wife and I were blind sided by the results. Diagnosed with Stage 3c Advanced Prostatic Adenocarcinoma. 12 core samples were taken. 11 came back as cancer. 7 were a Gleason score 10, 2 Gleason score 9, 1 Gleason score 8 and 1 Gleason 7. Intraductal spread in 2 of the cores and Perineural invasion in 1. 1 core said, "small focus of prostatic adenocarcinoma". Not sure what that means. CT and Bone scan didn't show any spread. August, I started Lupron injections. September, I had an MRI. No spread to the bones or other organs noted. MRI did say "Large neoplasm which appears predominately centered within the mid gland and peripheral zone but demonstrates extensive extracapsular extension both posteriorly and to the left. Probable involvement of the neurovascular bundle and wrapped around the seminal vesicles. Possible extension into the central gland at the apex." and that there were 2 abnormal lymph nodes in the right iliac chain, 7mm and 9mm that are "highly suspicious" of disease. Also said that the small pelvic sidewall and external iliac lymph nodes favored reactive adenopathy. A lot of big words. Removal was not an option. I then had the seeds implanted into the prostate. I started Radiation therapy Oct 6. 45 treatments. 25 of the treatments were to the hips and prostate area. Last 20 are boost radiation to the prostate only. I have 15 treatments to go. After radiation therapy is over, we are UNSURE OF WHAT IS NEXT?? We do realize that this is going to be a tough fight. Overall, my attitude is 95% positive and I have a very strong and faithful support group, my wife being my biggest cheerleader.

If you have any knowledge or experience, please comment.