I am sorry about your pain and also family problems. I am right there with you on both. I don't live with my family but I was going to suggest for you maybe family therapy? I think both sides face major stresses and it is good to be able talk about how one feels and maybe work on ways to cope. I think when we keep things inside it causes anger etc.
As for your pain I am confused on what you had done so not sure what the course of treatment is. I know for my rsd area if I keep it too still the pain goes sky high. If I keep it too active it does too so it is about balance. I will also say that if someone rubbed the cream on my rsd area I would be in a flare up regardless of if the med would of helped. Even those patches I can't tolerate pain wise. Everyone is different though.
I hope you have a better day