It seems to me you have a profound sensitivity to changes in nature. There are no doubt gifts you have from this as well, but I am sorry for all you have had to suffer.

There is no place it may seem to easily go to, to escape a sudden change in barometric pressure. It is commonly recognized that animals behave differently with changes in the weather. For example sea birds often rest on rocks along the shore or fly very low with low barometric pressure. It has been proven in a hypobaric climatic wind tunnel at the University of Western Ontario that birds behave differently when all conditions are maintained constant with the one exception being barometric pressure. It appears birds have their own way to register changes to barometric pressure in themselves and change their behaviour in different ways, such as immediately feeding in simulated storm condition.
This was reported in the journal “Animal Behaviour”.

Maybe you could follow barometric behaviour very closely like on an hourly or half hourly basic. Chart your sense of pain with barometric pressure. As soon as possible after you detect a significant change get comfortable in a bath where you are covered as much as possible. Keep the temperature warm. I assume at room temperature the air in the room follows outdoor barometric pressure, but in water the pressure would be more constant. See if your sense of pain stays lower and more stable under water and doesn’t fluctuate with the barometric pressure.

I imagine this could sometime be inconvenient or impossible, but it could be used with a cumulative build up of pain.

I found this information on birds and barometric pressure by chance, but maybe you were meant to hear it. I think water is our most powerful source of health and the most reliable. There is a range of receptivity with everything. You just happen to be at the highest levels of receptivity. This can be very good and very rewarding, but also has its risks and limitations. I hope you find a way to control any negative effects.