After today’s experience, I’ve decided to go back to using pens for a few days.
My site last night was fairly painful and the pain didn’t go away throughout the day. When I got home, I took it off and, sure enough: there was quite a bit of bleeding. I am sure I hit a vessel and the activity from the day probably didn’t leave it in peace…
So I decided to give the pump some rest, plus I ordered a new Quickserter (my original one seems to be doomed)… some time next week I will go back on it.