Diabetes during pregnancy is a challenging clinical situation requiring substantial patient engagement. The investigators have developed a novel early-phase tool, called SweetMama, incorporates educational, motivational and supportive elements to positively impact maternal health behaviors. This phase of work involves develop an optimized version of SweetMama via a 2-step sequential process of in-depth usability testing - focus groups and individual usability testing followed by refinement of SweetMama based on participant input.