Under The Knife?

I've talked about my weight struggles on and off on my blog, please excuse me if I'm sounding like a broken record here but it's something I'm struggling to find a solution to and is an ongoing issue for me.
As I've discussed many times - I went from being somewhat underweight at just under 9 stone (which for my height of 5 ft 9 left me looking a bit too thin) and a size 8 to suddenly ballooning up to a size 18 within the space of a year.
This all happened when I was diagnosed with Graves Disease - a condition which effects how my thyroid gland functions.
A combination of my condition itself and the steroid based treatment I was put on to resulted in rapid and extreme weight gain.
Over the years, my weight has fluctuated as my medications have been changed, stopped & restarted periodically and my thyroid function has fluctuated from overactive to underactive.
At the moment, my thyroid is supposedly functioning normally and so I'm currently not on any medication for it as a trial to see how things go.
However, my weight is at an all time high - I have recently tried all sorts of diets with little to no success. I have tried exercising and I have tried just eating healthily - there are no changes on the scales apart from the occasional GAIN of a pound or two.
In the last month I have gained a stone, despite eating healthier and exercising more.
It doesn't make any sense to me, and regardless of how many times I go to the Doctors in tears I get no help - I'm told that the endocrine specialists won't see me because my thyroid levels are normal at the moment, and I'm told that there's nothing the Drs can help me with.
I guess I'm kind of at a loss as to what I'm supposed to do at this point.
I want to lose weight, I want to be healthier - but nothing I try is working, instead the weight is still going on - this doesn't seem to make sense and to me should be an indicator that something is wrong but I can't get anybody to care about it.
Lately I've been turning my thoughts to surgical interventions.
I know I want to have one more baby, but I am considering - after having one more child - going down the route of having liposuction performed.
This article from Cosmos Clinic was a particularly interesting read for me and did make a lot of sense: http://www.cosmosclinic.com.au/blog/go-fat-never-go-back-fat-people-cant-stop-eating/
I'd love to hear from anybody who has had similar issues with thyroid conditions & weight gain, or from anybody who has undergone liposuction or similar.
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