High blood sugar and stress

I feel like I've had high blood sugar for days, maybe even a week and it's starting to get depressing. I'm not sure if my period is on the way, or if I'm getting sick, or if I am stressed out over my son who is having major anxiety issues. High blood sugar is the one part of having diabetes that really gets me down. It makes me feel like a failure, it makes me tired of course, and grouchy and it makes me feel like food is poison, or that my body is allergic to food. I've read the literature that says stress affects blood sugar levels so that could be my answer but I'm just doing guesswork. Is it directly related to this difficult phase that my son is going through? How do I know?

I want to know why I'm running in the 200's (out of the blue, nothing else has changed in my tightly scheduled life) and when it's going to stop.