The first nightmare

Practical today was horrible.
The preceding practicals were of no joy to me, and this was no different, if not worse.
Today for the first time I experienced the first physical symptom of what I believe is Post-traumatic Stress Disorder.
The Chemistry practical involved two question parts involving heating. I had to burn a splint with a salt on the tip and observe the flame. There was a crackling sound and a white/lilac flame, and I remember a cold sweat forming on my forehead. Then I had to heat the test tube in earnest, and that was when the real problems started.
I started the Bunsen burner.
I looked at the flame.
I held my test tube with the test tube holder.
I held it next to the flame.
I got a headache and put it back on the rack.
I switched off the flame.
After a while I started again.
I held it next to the flame for longer than the previous time.
Water droplets formed on the inside of the test tube.
I couldn't do it.
Then I asked for assistance.
And they said they couldn't help me, though while waiting for confirmation they did help me with it a bit.
And eventually I did it, though both my hands were trembling.
I think I'm screwed for practical.
Oh well, I never did like it anyway.