Hi, L.. Wow, that's heavy, but at least you have a name for it and there are some things that can be done for you medically.
I don't have Lupus, but I have been diagnosed with Fibromyalgia. We have similar symptoms: pain, weakness, fatigue, feeling these things and others for no particular reason that anyone can see on a blood test or an X-ray.
Some things I do that are helpful to me in managing the fatigue and living through the pain: #1, I live according to the energy I actually know that I have. That is, in times when my energy feels high, I know that it won't stay that way very long, and I pace myself. I try not to plan to do too many things all at once, and especially, I try to space things out every day so that I am not on my feet for very long at a stretch, nor am I on my back too long, either, because that makes me stiff. For instance, the way I wash dishes is thus: I have a small to medium sized dish drainer, and I do just enough dishes at a time to fill it up, but not to overflowing. That's about 10-15 minutes worth of work, and then I stop to let them air dry. If I'm not exhausted, I will also wipe down the stove and counters, but then I force myself to sit down at that point for 5-10 minutes. If there's something I can do sitting down (I've learned to sweep, vaccuum and mop from a chair or couch), then I do that, but otherwise, I will congratulate myself on doing what I just did, and find nice things to think about. I might send a text message with a joke to a friend, or an inspirational thought or Bible verse. Yes, I also pray a lot, that God will give me the strength over the day to accomplish what has to be done.
It's really, really important to keep your spirits up. It's really, really important not to get down on yourself or blame yourself because it's hard to do certain things, and it's hard to keep up with people who do not have a chronic illness. That's the biggest challenge for me. For instance, I have a hideous amount of pain in my wrists and thumbs, and last Sunday in church, I was determined to clap my hands during the singing, but then I got this awful pain like a lightening bolt in my left hand. I wrapped my other hand around the pain in my left hand, and then I started to cry softly. The pain was bad enough to cause that, but on top of that, I was so frustrated and disheartened by the fact that I couldn't clap my hands to make a joyful noise! Then I remembered that God knew what was going on, God knew before I went there that morning that that would happen, and He has compassion on me...and besides, He doesn't REQUIRE hand clapping, it's just a nice thing to do while singing praises. So I lightened up on myself, and gave myself permission to have arthritis this bad, and I just let go of it.
The mental and emotional challenges are far greater than the physical ones.
If I were you, I would also get some help. Rally friends and family around you to help with chores at least a couple of times per week. Don't give yourself the ghost of a chance to feel isolated and alone! It's not healthy, and it will become another thing to overcome. Get friends, family and trusted teenagers into your circle to play with your daughter on a regular basis so that you can rest a little more and conserve your energy...plus, if she gets used to having people help out before you have a really bad spell, she will be less likely to freak out when you really, really need the help.
I am a huge believer in smooth, gradual transitions. Kids seem to adjust so much better when there is not a huge, sudden crisis in the house.
And give yourself the loving attention you would give to anyone else who has your condition. ( : Give yourself permission to work out your strategies for dealing with the symptoms the same way you would cut anyone else some slack. And don't let anyone, and I mean, ANYONE, make you feel badly for not having a perfect house during the times that you need to cut back on your activities. I can't tell you how many people love to criticize and just don't understand that a chronic illness means that you are physically unable to push yourself to the last ounce of strength the way a healthier person can. A little bit of dust or a little something that wasn't put away is not a crime! But some crazy, judgemental people will think that it is. Learn to tune them out or tell them off.
Anyway, I hope these suggestions are helpful. Anytime you just want to e-mail someone who has an idea of what you are going through, even though we have slightly different diagnoses, please feel free to write me.
Peace,
Syl