did you test your ketones?
it sounds like you are very high to your normal
if you feel sick nauseous and over 11 and don't have ketostiks to test with..go to hospital..it's not worth risking DKA
If your bg levels are running continually high then you need to contact your diabetes team asap if your struggling away, if your asking in reference to DKA then have a look at the folling explanation and video: