How long is it you have to be awake untill you get diagnosed with chronic insomnia?

How long is it you have to be awake untill you get diagnosed with chronic insomnia?
I have had insomnia for a very long time and the Doctor can't do anything for me.
He has suggested I buy a lavender bag and put it under my pillow. I had to laugh he went to university for eight years to become a Doctor and all he can suggest is a lavender bag for a chronic insomnia.
seven days without sleep makes one weak...
CHRONIC INSOMNIA IS NO LAUGHING MATTER I SUFFER FORM IT
AND THERE IS NOT TIME LIMIT TO BE DIAGNOSED AND NO CURE
Insomnia refers to a consistent pattern of sleeping difficulties that causes significant distress in an individual's life. It is associated with disorders such as depression or anxiety, but can also be a result of poor sleep hygiene i.e, bad sleeping habits.
try googling it or ask your dr
not sleeping at night.. simply that. Like me. I am scared to sleep because it may be my last.
All the best