Please find it in your prayers & thoughts that you say you have another child and will have another baby soon...they need you. If your significant other annoys you that much that you want to end things, then move on from him. There are good men in this world seeking love. Children bring us so much joy. Bring your attention and joy in your kids and all will feel better. May God guide you to more happiness and guidance to seek the right person for you.
Submit your prayer request. Thousands of caring people will see it and pray for you.
Have you gone to a church or asked your community for help? I know there are so many giving people who would love to help those in need. Please reach out to someone who can help you.