I has cath this past fall. Wasn't stented though, only very minor blockage. I was off a couple days at most, probably could have went back to work the next day. Minor soreness at the cath site with some bruising for a week or so. The doc recommended limiting "streneous activity" for 2-3 days past cath. Kind of vague.
I had a brady arrythmia with a 9 second "pause" at home. To ER and a heart cath the next day. I don't recall much pain except the immediate site pain for an hour or so. The next day I got a pacemaker whose site was considerably more painful but not intolerable. A couple of darvocet every now and then was all I needed. Most of the pain was from the nurses' putting ice, compression and sponge tape because of oozing at the site.