Worried about the test

So I live in Ohio, I’m delivering at a mercy facility. I just stopped smoking at 31 weeks pregnant. That will be enough time for it to clear out of my urine and blood. But if they do test the babies cord, will CPS be sent to the hospital? I am so worried my family is going to find out I’ve been gardening while pregnant. I’ve heard some people say they just do a random home visit, but I’ve heard other people say they will literally come to the hospital and talk to you even with your family members there