Get some anaesthetic salve. When I did exactly the same thing some years ago, I was mad with pain until we got some goop from the pharmacist.

Chickpeas are a rather innocent food to be indulging in, unless they're cooked in whale blubber or something. I eat 'em instead of lentils (which turn me into the Hindenberg) and soy beans (same effect in a different way - they're high in fat).