I understand. I feel a sudden drop but may not notice a slow drop. that is why I may feel like I am a little hypo at 80 because the drop was very fast. Then I may not have any symptoms at all when I have a 70 because the drop was so slow. I test frequently so I can see the highs and lows that may be developing before they become so bad. I test every two hours on the average and even more often if I am going to drive my car.
Before driving deffinatly. When I first started out in January I had one really bad day, I was freaking out driving to the mall, pulled over and swore I was going to pass out. turned out my reading was 150. There's still the occasional panics where I have to go and walk around, do deep breathing, close the eyes and calm down.