Dont take your pump off. Best advice I can give is increase your basal by tbr by another (eg)10%. Give each increase in tbr at least 6 hours to take effect (thats how long I leave myself). If you are due on soon, you will likely need a certain amount more-I can need up to 30%more and used to need 70% extra! Keep testing, correct when the pump tells you but no more (or you risk stacking) and if you're worried about it being the cannula, do the correction suggested by syringe. If you rise further, correct and raise tbr. If you stop rising but dont come down, correct. If you start to come down, hold off doing anything else for a good few hours (except test) to allow things to stabilise.
Above all, try not to panic!