It is not recommended to take melatonin while pregnant. Instead, there are several techniques to improve sleep hygiene that can help with insomnia. These include relaxation techniques, maintaining a consistent sleep schedule, creating a calming pre-sleep routine, and avoiding stimulating activities before bedtime. It may also be helpful to address any work-related stress or anxieties that could be affecting sleep quality. Consulting with a professional, such as a psychologist, can assist in managing stress and improving overall well-being.