| When did you change your site? It is possible that you've hit a muscle or maybe some scar tissue underneath the abdomen.
I've been pumping since mid-December and this has happened to me quite a few times. If I change my site, say on a Monday afternoon, and it's feeling a little uncomfortable, I wait until the next day to see if it's any better. If it's not, I will put in a new site, do a fixed prime, and re-connect using the same insulin reservoir from the day before. I check the cannula on the infusion set that I just removed, and in most cases, it's bent.
Karen | 
