I 'fess up to being the guilty party that didn't answer his email. I don't check the one listed on this forum very often...my bad!
Anyway, I didn't have ANY pressure issues. Some men talk about needing cushions when driving back from the procedure but I didn't even need that. Maybe I've just got extra cushioning in my behind! So, I'm no help on this except to suggest that you call your radiation oncologist and ask him/her about it. Sorry not to be more help.
Age 62, Gleason 3 + 4 = 7, T1C, PSA 4.2, 2 of 16 cores cancerous, 27cc
Brachytherapy December 9, 2008. 73 Iodine-125 seeds. Procedure went great, catheter out before I went home, only minor discomfort. Regular activities resumed, everything continues to function normally as of 4/10/10. 6 month PSA 1.4 and now 1 year PSA at 1.0. My docs are "delighted"!
Tudpock's Brachytherapy Journey: https://www.healingwell.com/community/default.aspx?f=35&m=1305643