The user asked about the potential adverse effects of insulin during pregnancy. Some common side effects of insulin in pregnancy may include hypoglycemia, which can lead to symptoms such as changes in mood. It is important to monitor blood sugar levels and speak with a healthcare provider if any concerning symptoms occur. Insulin is typically the first-line treatment for gestational diabetes, but finding the right dosage is crucial to prevent hypoglycemic episodes. It is also important to manage gestational diabetes to avoid complications like premature birth or having a larger baby. Additionally, maintaining a healthy diet and staying hydrated is important to support overall health during pregnancy.