Frustrations!!

I am so frustrated!! My blood sugar has been high all day yesterday and this morning. I am taking the right amount of insulin and haven't even eaten all that much. It has not been below like 240. It was 289 just now. Usually when I start to take care of myself again, it is contantly low due to my insulin pump being calibrated too high for what I take. So why isn't it low now?? Maybe I need to change my pump site tonight when I get home from work and see if that helps.