Checking numbers

Gina

So the other morning I woke up and checked my fasting number, It said 101. Which I thought was really high considering I didn't really eat dinner that night sense we had a family get together and did a late lunch early dinner The day before. I was very careful with what I ate and didn't have any carbs or dessert,

I got nervous and decided to check it again right after and it said 93, then I was just curious and checked it again a second later and it said 99. Three times in a row in less than 5 minutes and I had 3 different numbers. Has this ever happened to anybody? Do you think it's my machine or should I be worried? I'm not taking insulin and I am really trying to keep my diet under control so I don't have to take it. Your thoughts???