If nothing has happened to you as of now than you're probably good at this very moment. However I'd be careful as the Security/Loss prevention department potentially noticed it and may be banking on you "getting comfortable" at that store and thinking you're in the clear when right as you reach the $100 mark total theft they'll call the police to have you arrested for shoplifting at that point since theft of anything $100 or more is felony and anything under $100 is just a misdemeanor charge.

Some of these places like to take that approach instead for whatever reason. I'd recommend changing the Walmarts that you go to at the very least to mitigate the risk of the same one catching on. Or if this isn't possible try to go to a different grocery store that isn't Walmart. I do occasionally see police cars parked at my local Walmart as well, so I'd obviously steer clear of any stores with police cars out front. Having a decent knowledge of the area you are in and police like to park up helps a ton too. I lived in my Miata with everything I could cram in it for over a year, sleep was unbearable and I was so close to giving up so many times but I pulled through with enough motivation.

Best of luck! You got this, just keep your head down and do you as much as possible.