i had same thing; 43 days radiation , shot every 6 months, I don't know if my shot is exactly the same but I have hot flashes and takes all the testosterone out. I have 3 month check ups and the shot is given every 6 months. my doctor gets a blood sample every 3 months and gets the psa from that. he shows me on the computer diagram screen. it gives a graph that shows if it's going down.
yours no doubt knows the psa count. he will give it to you if you ask, I think