I am 15 months post brachytherapy. Had an early stage cancer - GS = 3+3, no palpable tumor, cancer found in 1/10 cores and in one-third of that core. Had PSA checked every 3 months during the first year. Went from 5.6 (pre-treatment) to 0.9, 0.9, 0.6, 0.4. Am now getting it measured every 6 months. In the second year, it is possible to experience a PSA "bump", where the PSA increases. They don't get worried unless it increases for 3 succesive readings, spread over 9 months. I am now over urinary problems but, for me, it took about 5 months before I was.