It's true that those people close to you won't understand what you have been through, I can barely understand and I have experienced it... Find understanding with others who have experienced it as well. Seek out therapy, support groups Facebook support groups, blogs etc. There are many good resources for connecting with those who understand because they gave been through it as well.
Life with Fibromyalgia/ Chronic illness----i can imagine someone feeling this way, and it almost makes me laugh thinking how true it would be if I was still working. Personally, I almost wish there were anyone that would actually care enough to ask. There are only a couple people at church that even know me well enough to know I'm battling to get through a day.