At the end of a week’s teaching, I get a bad migraine, which my doctor can’t cure. I wonder if there would be any harm in treating it with homeopathic remedies? And could these treatments cause me any side-effects?

There’s no reason at all why you shouldn’t try homeopathy. As far as side-effects are concerned, I’m like most doctors in believing that homeopathic medicines are so dilute it would be almost impossible for them to cause any adverse effects.