| Molly,
Sounds like fun. Do you always get sick when going low?
Understand first off that meters are not accurate. An 80 is the same number as a 76, a 65 and an 85. They are approximate values only.
In addition to the reading, you also have to figure out why you went low and whether you expect it to continue. Perhaps you miscalculated your carbs or your activity was high. You'll usually be able to figure it out. It matters more as you get older and less able to pop out of hypos.
An 80 is a bit low for going to bed for many, but some of us do it fine. A 160 is definately too high IMO. | 
