Hello ......
Try not to read too much into the high PSA at the moment. Hopefully, it's an infection - but even if not, there are a lot of choices in the future.
Right now ..... I'm sweating two fairly high PSA readings in the last 2-1/2 weeks - and I should know better than to assume the worst!!!! After my last chemo for 5+ months, I was taken off the chemo. My PSA went from 15+ to 33+ to 40+ all in 9-weeks.
My Oncologist is in a "wait and see" attitude for another two weeks - then another catscan - and only then - a decision of what's next! And, by the way, this has been about ten years for me since the original PC diagnosis.
Try to not think too much about it - at least, until you and your doctors know more.
My signature is below - just to give you an idea of many of the possible treatments of PC .... or advanced PC as is my case - and many others here.
Peace and wellness
Rob & Gizmo
Oh yes, I have been alone on this 10+ year journey - so it's not insurmountable!