Pain is the friend of the meditator. Do not evade it, it can lead you to nibbana
Pain does not have to inform, you of its coming. It may not disappear, but if it does, you may cry over it, for your friend has gone away.
Pain is observed not to make it go away, but to realise its true nature.
When concentration is good, pain is not a problem - it is a natural process. If you observe it attentively, the mind will be absorbed in it, and discover its true nature.
When pain comes, note it directly. Ignore it only if it becomes overpoweringly persistent. It can be overcome by deep concentration brought about by continuous mindfulness.
If intense pain arises arises walking meditation, stop occasionally and take note of it.
Be patient with anything and everything that stimulates your mind.
Patience lead to Nibbana - impatience leads to hell.