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Kim it looks like insulin can be stored as long as the expiration date if kept in a cool dark area or a refrigerator.
dhs.wi.gov/rl_dsl/Publications/GudStrgInsulin.pdf
If you have a car or a generator you can keep the insulin cool in one of those little picnic fridge/cooler. There are also 12 volt (Solar) fridges as an option.
I to was diagnosed with a chronic disease. So I know it can be hard to adapt at first but believe in yourself and you will get through this challenge. Check out the internet the American Diabetes Association has a pretty good website www.diabetes.org