Worried about my health now

Those who know my story know it has been 3 years of STRESS for me which I am now realising has taken it's toll!
The stress never ends as from day one my daughter has been fighting to get her son back and nothing will stop her which is good in some ways BUT I wish she would use that energy on getting herself better!
Talking about energy I don't have any!! My health has suffered due to the CONSTANT pressure and stress from my daughter in this BATTLE as whatever it is I know now it has been a constant battle all along with my Grandson in the middle of it
And it's far from over yet!!
BUT I think I now have to get a health check done as have been having some symptoms of type 2 diabetes which is unsurprising as I comfort eat all the wrong foods which is stress / emotional related plus I smoke which is the same or SO hard to give up when stressed then the lack of exercise due to always being tired but my week consists of constantly running up and down for contact and am not allowed to have a break from it and even respite although it helps it is just a break from the STRESS which will NEVER end as she will NEVER stop fighting for him as even if I go for guardianship she is allowed to take me to court once a year and some birth parents do continue to give the guardians hell and they don't stop and they don't give up even though they don't get well!!!
I don't want to get so I'll from the stress of the constant battle with my daughter and ideally I would want us BOTH WELL but it's like one of us will crack and give up and I feel like it will be ME if my health totally fails!
My daughter is the picture of ruddy health at the moment and I am the one who looks I'll lol but it has been like that all along and I know she will play dirty and want my health to fail as she seems to think with me out of the way she will get her son back!!
I need to sort my health out but not sure how people can remain healthy when under constant stress and pressure and little man is in emotional distress too and has been comfort eating and has regressed since this battle upped a step and sometimes I feel like giving up but I can't with the concerns I have but it feels like the stress could do me in if I am not careful and then I start thinking if she can give up the alcohol and cannabis and dodgy boyfriend who has now moved in with her perhaps it won't be so bad