I've only had my pump for a few days and still only have saline in it. The set went in fine when I did the first one at the clinic and it stayed in the 3 recommended days without me noticing it too much. I changed it on the 3rd day and the site itself was really painful and it also hurt quite a lot whenever saline went in so I changed the set again and used another site and although this one doesn't hurt I get a stinging sensation when a bolus saline is delivered (don't feel anything for the basal dose). Does this mean I've hit scar tissue or is it still okay? The dsn told us that we shouldn't feel anything and if we do then we need to try again. I'm using the Inset II and so far I'm not very confident about it. Of course testing won't tell me anything at the moment as it's only saline. Please help.