I am not Type 1 diabetes but recently I was on holiday and overdid it on my favourite foods - so my blood sugar shot up. I also vomitted. Went to see a doctor. He told me not to worry as these things happen on holidays. This assured me.
What your bf needs is to be assured. Hopefully your doctor could call back. Do you have a Diabetes Helpline or Diabetes Association whom u can call for advise?
Most importantly keep calm and do not stress out as stress is contagious and it affects the blood sugar level as well.
Try to get back on routine asap.
I was on insulin for a short while and my diabetes educator said that we can increase insulin shot by 2 pts if the blood sugar spikes. Vomitting always makes blood sugar spike. So try to solve the problem of vomitting; then the blood sugar will come down.
Hope this helps. Keep calm, it takes time to go back to routine and for blood sugar to go back to normal.
It took me a week after I was back to regulate my blood sugar to acceptable level.
Health