This just shows that there is a link between marijuana and the feelings of pain (anecdotal evidence with sample size 1, but still). And the way you are describ

This just shows that there is a link between marijuana and the feelings of pain (anecdotal evidence with sample size 1, but still). And the way you are describing it, it seems that it gives you 'ideas of pain' rather than pain itself, a subtle but important distinction. If this is the case, it is more aking to the way hypnosis reduces pain, rather than painkillers. Which makes sense, since marijuana does make a person a lot more suggestible, which can be used to the user's benefit if properly controlled. In your particular case, might it be that you're hypnotising yourself into remembering and feeling old pain ?