Not sure what to do next

Developed IPF as a Adult in 2007. Had lung transplant in 2014.  Not a cure, many side effects of medication which I find hard to deal with. Had to give up work after managing to get back due to being off sick a lot.  Pick up aii the bugs.  Lost DLA, refused pip. Mental health not good, Struggle getting up stairs or carrying anything. Only real difference is I do not need Oxygen and can walk a little better, Also had Colitis from the age of 14 , Colon and large intestine taken out at 32,  Now have leakage from back passage, Always need to know where there is a loo.  Not even sure if I am registered disabled anymore since DLA . My kidneys are also failing along with a host of other problems. Not sure what to do next. In anger I have ODed on insulin once lucky for me I had used slow release and there was not a lot units in the file. right at that point I just picked up the first syringe and injected.  Pressure I do not seem to be able to handle anymore and have been informed Pressure is the last thing a transplant patient needs.