nap in afternoon

I have to take a nap at lunch or else I get really disoriented. It can be only 5 minutes, but if I don't take a nap I get really shaky and feel sick.

Is this a sign of diabetes?

I had gotten check for diabetes a couple years ago, and the I came back negative, but I suppose something could have changed since.

Walmart and CVS both have glucose test kits for under $30 which can usually test up to 25-30 times. This will give a general idea. Id do this 7-8 hrs fasting in the AM to get a base line.

If you get anxiety after AM waking (many here do) this can elevate your blood sugar, which is what adrenals can do during anxiety or energy need/refueling (your body views this as the same).

Shaky usually doesn't happen from high sugar, thats usually a sugar low issue. Shaky can also be a cortisol release from adrenal fatigue - the wired but tired feel some get here.