Thank you for all the helpful responses.

I found the chart especially helpful.

I think it's probably a combo of eating out over the holiday weekend (extra salt!!) and the beginning of the semester stresses (which aren't going away any time soon).

I hesitate to call the doctor's office because I'm afraid they'll think I'm an idiot. I'm afraid of that a lot, alas. And my blood pressure is always 20 points higher there than when I give blood (because I get I'm not scared of giving blood after so many years?).

Anyway, I appreciate the advice, and I'm going to push back the fear of being an idiot and call tomorrow. But I'm also not nearly as worried as I was the other day (thanks again for that), so that helps in itself.