I have to wonder, are these your normal symptoms of anxiety, because I too get head rushes and the feelings of dizziness, and I am not pregnant. In fact, during times of the month (ladies know which time to which I am referring) my hormones cause my anxiety to rise sharply! More than likely this is just a hormone thing, since you are pregnant. I understand your concern! Thinking of the little one! The sugar that you consumed may have had something to do with it as well. Of course I am NO physician. These are merely suggestions.