OverWeight and UnderHappy

Hey everyone,
I'm 36, currently 'obese' and very unhappy with my situation.
I've birthed 3 children, Naturally....the latter 2 were twins...and it has wreaked havoc on my body.
My degenerative genetic back condition became almost unbearably hard to cope with
over the past 12 years, i have been put on more opioids than i really know what to do with.
At first, I had leftovers, as I was trying REALLY hard to NOT even take the prescribed dose...
But now? I find I am taking the prescribed dose....and it doesn't work.
So i am in pain all day, everyday.
And when something DOES need to be done? it takes me ALL freaking day to achieve it!
WHY??
Because of the pain levels. My sciatica begins to play up in my legs, then it will lead to night time pain...
ugh! Catch 22.

Then, I had a month of solid straight migraines, having never suffered even headaches much in my life. I kept going back to GP, who kept ordering lung X-rays, Lung CT Scans, at the end of which, he stated "You're depressed, you're stressed, you're anxious...go home and rest, and up your fluids!"

Only for my to lose consciousness less than an hour later

Since then....i randomly went to get my eyes tested for my new glasses, and instead of being there for 20-30 minutes, I was there for 2.5 hours getting my eyes tested, poked and prodded.
Only to be told there was haemorrhaging behind my eyeballs, and pressure on the cornea.
The very next morning, I was admitted to the Eye & Ear Hospital in the City, and was there for like 7 hours, incl a CT scan (contrast) of my brain.
Prognonsense is: Fluid on my brain.
But....they cant tell me how it got there....
TREATMENT: Diet and exercise
OH....and a lumbar puncture on the 20/06 to alleviate the pressure in my head, (This will also give them something to test/biopsy?) and then a course of 100 tabs, to reduce the fluid in my brain.

In the meantime.... Diet and Exercise they said.....
It'll be easy they said!..........