Congratulations on your quit, mightyboosh.
Soon, most all the nicotine will be gone from your body.
The exhaustion doesn't last long and not everyone experiences tiredness.
It is good you are communicating what you are experiencing,
this helps us know where you're at and is also a road map for other quitters.
Keep a close eye on your blood sugar and drink a good pure fruit juice (one w/out corn syrup or other added sugars).
If you start to feel tired and hazy for a while, don't worry it will pass, it is just
The Great Smoke Free Mental Fog
and be sure to reward yourself for every crave or trigger you conquer.
You will never/ever have to go through this again.