I do not have any information medically, but I have struggled before with depression, and my fiance has alot of medical issues where she can not leave the bed for anything other than to go to the bathroom because her head hurts so bad.
Remember this simple thing. God only gives you enough grace for the day. You can make it through the day one day at a time. Everything happens for a reason. You can take what is going on and sulk about it or take it by the horns and make the best of it. I sincerly am sorry for what is happening in your life, but realize you need to push yourself to make it through each day and make it the best. Your attitude is so important because if you have a negative one you will get similar results. Positive attitudes may not make everything bad go away but it leaves possibilities for improvements and also makes each day much easier.
Everything happens for a reason, do not sit and try to figgure out why or ask why me, just be happy with what you have and know it could be worse.

God Bless!
chris