Acute circulatory problems and tingling in the head?

It's happened to me twice at work in the last month. I'm under a lot of stress at the moment, and today at work, so much came at once. I was also extremely hungry, and suddenly I felt really strange. I felt a tingling sensation in my head and I felt dizzy. It got better afterward, but since then, I've felt weak. Could it just have been situational again? In any case, I'm going to see my doctor next week anyway.