I've been a diabetic for 20 years and in the last 4 months, I have taken my rapid acting by mistake - it's not only new people that make this mistake! You are not alone. Make an appointment with your Diabetic Nurse as soon as you can and address your concerns with them. They'll probably suggest something like - put a sticker on it, but hopefully something more useful. I don't think I got any valuable help in my first 10 years as a diabetic. Good luck.