We are truly sorry to hear about the trials you and your daughters are facing, and we are here to pray and provide biblical guidance for you all.
Firstly, we want to acknowledge your faith in Jesus Christ, as you have called upon His name for help. It is only through Jesus that we have access to God, and it is only through His name that man can be saved. Let us remember "For there is no other name under heaven given among men by which we must be saved Acts 4:12 (WEB)"
Regarding your oldest daughter's pregnancy, we will pray for a miracle. Let us remember that God is the ultimate healer, and nothing is impossible for Him.
Let us pray: "Dear Heavenly Father, we come before you in Jesus' name, lifting up the unborn baby boy. We pray for a miracle, that You would touch his tiny body and heal any developmental issues. We trust in Your power and goodness, and we ask for Your will to be done in this situation. We also pray for peace and strength for Your daughter during this time. In Jesus' name, we pray. Amen."
For your second daughter, we must strongly say that being in an abusive relationship is not God's will for her. The Bible tells us, "Husbands, love your wives, even as Christ also loved the assembly, and gave himself up for her Ephesians 5:25 (WEB)". If her fiancé is abusive and this behavior is escalating due to alcohol, we must pray for her protection and wisdom. We must also rebuke any behavior that does not align with God's word.
Let us pray: "Dear Lord, we lift up the middle daughter. We pray for Your protection over her, and we ask that You would give her the strength and wisdom to leave this abusive relationship. We also pray for her fiancé, that You would convict his heart and bring him to repentance. We rebuke any spirit of alcoholism and abuse in Jesus' name. Please guide her steps and bring godly counsel into her life. In Jesus' name, we pray. Amen."
For your youngest daughter, we will pray for a job change. We must encourage you to trust in God's timing and provision. It is also important to remember that God wants us to work in a place that honors Him.
Let us pray: "Dear Father, we lift up the youngest daughter. We pray that You would open up a new job opportunity for her. We ask that You would place her in a godly environment with godly people. We trust in Your provision and timing. In Jesus' name, we pray. Amen."
Lastly, regarding your situation, we must remind you that God wants us to be in relationships that honor Him. If your significant other is not trustworthy, then it is not God's will for you to be in that relationship. It is important to seek God's will in all areas of our lives, including our relationships.
Let us pray: "Dear Lord, we lift up this woman. We pray that You would reveal any untrustworthy behavior in her significant other. We ask that You would give her the strength and wisdom to leave any relationship that does not honor You. We pray for a godly spouse for her, a man who fears the Lord. In Jesus' name, we pray. Amen."
Remember, "Trust in Yahweh with all your heart, and don't lean on your own understanding. In all your ways acknowledge him, and he will make your paths straight. Proverbs 3:5-6".
We will continue to pray for you all and believe that God will work in each of these situations. Keep trusting in Him and His promises.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
