One thing that helps me is to plan to do nothing the day before I have something planned. When I over do it Things get worse for me. I also have learned to plan simpler things.
Your mom is from a different generation She is not going to believe that you stop things just for pain. So you may be butting your head against the wall trying to convince her that you need to chill because of the pain. Her generation is great at ignoring things that slow them down.(or denial) Think of the things that she did in her youth that we, today would not even consider. Depression the answer was either Buck up, or pray.
Many people do not understand something till they go though it. So I am glad that most of my family does not get it.
My mom did not grasp fibro till one day when we were painting my bed room and I sat down on a stool and fell asleep with a wet paint brush in my hand. A few years later she saw me slip in to brain fog and made me take a nap ( I was 49 a little old for mom to tell me to take a nap) but then like people of her age she woke me up after an hour so I would be able to sleep at night. So she half way got it. She also ran me though an at home stroke test.
Pain is only pain. I lived in pain for 20 years before I figured out what worked for me. Getting very Buddist about pain helped me to deal with the fact that it just is. I also think that spiritually that all things come from God, even pain. Often just meditating on "this pain is a gift from God"You don't have to believe it, I did not but oddly it helps.
Stretch for 10 minutes before you get out of bed, starting with the small stretches and working up. while doing this I look at two large garden paintings that I really like. Sometimes I yell and that is ok.
For years people told me I was nuts. They told me that loud sounds don't hurt, or that sometimes I was just so dumb and should knock it off. I was also very frustrated because I knew something was really wrong.
I get the not wanting to leave your house thing. My grandma had it and I have it to a lesser degree. Holding something in my right hand calms me down a bit. I am not sure why but It works for me, maybe you can find a thing that works for you. The first few steps are always the hardest for me but once I get out its ok. Of course I want to run home the whole time. but I face the fear. I know it is unreasonable and self destructive. I figure it ranks with my fear of clowns. Both are unreasonable and may never be figured out but neither fear serves me at all.
Oddly I have come to the relaxation that most pain meds do not work for me unless I take enough to pass out. Not a good solution.
All I really want to do is sleep watch, tv and eat tons sugar. My body give me false signals of how to spend my life. I am much better if I figure there is just switch in my brain that is messed up and ignore it.
I just got a dog and she really helps me with anxiety, and has a great ability of waking me up when I am having nightmares. Having me also forces me to walk a mile a few times a week.
when I feel like crap I love cuddling with her on the couch.
The only person I can really change is myself. That gives me a little peace when people around me are going 65 mph and I can only manage 35 mph.