If you feel sick go to A&E as there is a risk of Diabetic Ketoacidosis (DKA), read up on the symptoms on line so you know what to look out for. (I say A&E as they have the machine to do the blood gas test, that GPs don’t have access do. Tell the person on reception you think you may have DKA.)
Also get yourself a BG meter as quickly as you can, so you can test your own BG if you feel sick etc (there is no real risk of DKA unless your BG is over 20 for some time, or over 30, assuming you are not taking any SGLT2 Inhibitors).