Hi, @JoAnn2 –
You didn't mention what you ate before your exercise – or how well your basal and ICR are tuned.
I like to use protein, carbs and fat to fuel my exercise. Have you tried snacking on dark chocolate (86%+), lower carb nuts (Spanish peanuts, pecans, macadamia and walnuts) and cheese?
Is there a reason that you didn't ck your BG between exercises? When exercising, depending upon intensity, I generally ck my BG every 30-60 mins.
Which meter are you using? Have you compared it with a lab draw?