PS - I mean, I would do anythign to take away the pain when they are sick
That is a good point, and directs the topic into the area of why God permits wickedness. Why doesn't God remove pain when a person prays?Christians still find pain relievers more effective than prayer.
"Please remove the blisters from my feet that developed whilst I was preaching your word" - doesn't have any affect though I can see no reason why God should hold out on answering such a prayer.