Losing hope

Hi I'm a carer for 3 young adults with autism and other complex needs for the last year my own health has went down hill so very quickly I have been having to use a wheelchair this past 2 months as kept passing out with the pain when I did any walking. I had an angiogram as have heart problems on top of my other health problems. It should have been good news as I had no blockages but as it turns out they damaged my artery so I now have a very large blockage. No one seems to know what if anything they will do about it.
So now I'm rather stressed out which means my fibromyalgia is going into over drive and all is so very painful. 
I think it's all just getting to much at the moment and I'm losing hope Thanks for reading.