Stress and sugar levels

So, today when I woke my bm was 6.9, had 9 lantus that I usually have, bowl shreddies and 3u of novorapid (as usual).

I had a very stressful few hours at work, 30 mins after the peak of the stress started feeling shaky and clammy. I deserted my students and bm 3.

Is this a usual reaction to stress?