Hi hplo,
yikes...that is scary....I do not have experience like that. I too am at a year and a half...my battery did reposition a bit and to recharge I have to lay on it the charger so I do it while I sleep.

Is the site warm or hot ...red??...does it feel like infection...do you have a fever.????
If it keeps increasing ...there is always the emergency room...please keep us updated and do call your rep and doctor.

Johanna