Putting in your two weeks notice after maternity leave

Katie

Hey moms. So I have been working for this company that is not the best. Good pay but not family fair to there employees. Since I have been on maternity leave they have been giving me problems. I since then got a new job with better hours. How should I put my two weeks notice in. I'm very nervous about starting a new job all the what ifs . But I know I will be happy there. Can my old job cancelled my insurance and disability right away or is that against the law?