Desperate and in pain...

I've been with my boyfriend for almost 4 years and we were trying to conceive for over a year. I have been in pain for as long as i can remember.. Back pain, legs, shoulders.. All parts of my body and never could figure out why. Recently i was diagnosed with Fibromyalgia.. And now i have to learn how to live with it. The worse pain that I'm having is knowing that there is no way i am able to get pregnant any time soon. Lately me and my boyfriend have gone distant because of all the stress that this has cause. I'm no longer the same person.. I have mood swings all the time and always in pain. I'm afraid he's gonna end up getting tired of me and my health issues and leave me.. But then again.. I'm always pushing him away. I don't know what to do anymore....