How is your blood sugar? Is it ok?
You did the right thing phoning triage. Always best to check. I had ketones after sickness during pregnancy and got quite freaked out, but they were put down to 'starvation' and I was told to try to eat something. Obviously, that's not so easy when you're sick!
Keep testing for ketones and keep testing your blood sugar too. I'm sure you'll be fine and it's just a case of monitoring things, but if you're at all concerned phone triage again.
I hope you feel better soon. X