Sorry you're having a difficult time. I think we've all been in your shoes at one time or another so we can honestly say we understand. I don't know what meds, if any, that you're taking but maybe you need to switch things up. I can't tell you how many times I've had to change dosages or meds, of course with my doctor's help, over the years. Sometimes you just need to stay in bed but I have found if I make myself get up, as hard as it is (in tears most of the time) it does get me thru the flare a little faster. I don't push too hard and start cleaning or working out or anything too crazy because I know I'll pay dearly for days to come but just get up and move. Even if its for a few minutes several times a day it truly helps.
I'm not going to lie, this is painful both mentally and physically and it took me a long time (yrs) to convince myself to do it. It's so depressing to feel the way you do right now and that is not a good thing to add on top of already feeling like you can't go thru this one more day. I still have days that I stay in bed half the day because I don't want to face the pain and exhaustion but in the end I make myself get up and at least do one thing such as put dishes away, put a load of laundry in, then I will lay down for a bit then get up again.
I know this is the last thing you want to do but give it a try. If we lay around and not accomplish simple tasks then we feel worthless. I'm not saying your lazy or anything even close to that and again I know how you feel, but do this for yourself. You're not going to instantly feel fabulous, it's a work in progress and always will be but try it.
When somebody said the same thing to me I was angry because I felt like they didn't understand how I felt and it took me a while to try it but I'm so glad I gave in. So you have exhaustion, chronic pain, feeling worthless and add depression on top and you're a hot mess right ? Absolutely !! I finally asked my doctor for an antidepressant because I didn't want to live one more day feeling this way, I too was at my wits end and didn't want to deal with this anymore. It took about 3 wks of taking the new med before I felt like I was going to make it. I'm so happy that I went this route, I feel better about myself, my life, and can handle things better. I'm not by any means pain free, I still have sleep issues, I still have bad days but mentally I'm doing so much better and feel like I'm able to handle "the dragon" better. To me, this is a huge step in the right direction. We never get rid of FM but we can learn to handle it to the best of our ability. That's all we can do.
I hope that this is helpful information, I truly know what you're going thru and feel for you. Please consider asking for an antidepressant, it doesn't mean you're weak or crazy. It means you want to enjoy your life as much as possible while dealing with a chronic illness. There's nothing wrong with that. Best of luck