toss the bmi chart out the window. it's a chart made by actuaries, not humans.
it doesn't factor real people's frames or even if you have boobs. i'm small, only 5'2", but with big bewbies, and when anorexic with size zero jeans falling off me, the bmi chart said i was "normal".
even the fittest pro athletes would be considered overweight/obese using this chart because of their muscular builds.
stop snacking on nuts.
focus on whole healthy foods and activities you enjoy and just forget the scale for awhile.
you admit your body image is skewed. fretting about bmi and 2 kg isn't going to help or fix that.
As I ate the oysters with their strong taste of the sea and their faint metallic taste that the cold white wine washed away, leaving only the sea taste and the succulent texture, and as I drank their cold liquid from each shell and washed it down with the crisp taste of the wine, I lost the empty feeling and began to be happy and to make plans.
– Ernest Hemingway