I"ll add my words of encouragement along with the others.
I also have a positive margin. I'm 28 months post surgery and still getting 0's on my PSA.
The doctor will most likely check your PSA More frequent to be save.
I started on 3 month checks, then six month checks and now once a year check.
Hoping you the best and as you have seen there are several with positive margins that are doing OK. If the cancer returns again its a plus since they will know where to pin point the radiation.
lewvino age 57