Libre sensor

Hi, I was just wondering if anybody has ever had issues with Libre sensors giving completely off readings constantly says its low while I'm asleep and after meals it's always off by at least 2-3 numbers. I'm on my 4th sensor now that's giving faulty readings, prior to this I've had good ones with accurate readings!! I'm pregnant so the false readings making me super nervous and I also don't want to keep pricking my fingers 6-8 times a day!!!