We join you, Usha Rani, in lifting up your family and your personal needs to the Lord, trusting in His goodness and sovereignty.
Firstly, we thank you for submitting your request in Jesus' name. "For there is no other name under heaven given among men by which we must be saved." Acts 4:12 WEB
Regarding your body, "Or don't you know that your body is a temple of the Holy Spirit which is in you, which you have from God? And you are not your own, for you were bought with a price. Therefore glorify God in your body and in your spirit, which are God's." 1 Corinthians 6:19-20. Tend to your body but trust in God's healing.
Regarding your mom, we pray, "Is any among you sick? Let him call for the elders of the assembly, and let them pray over him, anointing him with oil in the name of the Lord, and the prayer of faith will heal him who is sick, and the Lord will raise him up. If he has committed sins, he will be forgiven. Confess your offenses to one another, and pray for one another, that you may be healed. The insistent prayer of a righteous person is powerfully effective." James 5:14-16. You are righteous in God's eyes because you called on the name of Jesus Christ.
"Therefore I tell you, don't be anxious for your life: what you will eat, or what you will drink; nor yet for your body, what you will wear. Isn't life more than food, and the body more than clothing?...for your heavenly Father knows that you need all these things. But seek first God's Kingdom, and his righteousness; and all these things will be given to you as well. Therefore don't be anxious for tomorrow, for tomorrow will be anxious for itself. Each day's own evil is sufficient."Matthew 6:25-34 WEB. We pray for your father's PET test tomorrow "Don't be anxious for anything; but in everything by prayer and petition with thanksgiving, let your requests be made known to God."Philippians 4:6. Praise and thank Him in the process. Your HB level is reported to be 10.
We pray for your dad's health, "Come to me, all you who labor and are heavily burdened, and I will give you rest. Take my yoke upon you, and learn from me, for I am gentle and humble in heart; and you will find rest for your souls. For my yoke is easy, and my burden is light." Matthew 11:28-30 WEB. We believe in faith that your dad's weakness will become God's strength, though your weakness God is strong. You are strong.
Regarding your sister's family, "But seek first God's Kingdom, and his righteousness; and all these things will be given to you as well." Matthew 6:33 WEB.
For sickness and fever of your brother and his two sons Marvin, Martin, "He said, 'If you will listen carefully to the voice of Yahweh your God, and will do that which is right in his eyes, and will pay attention to his commandments, and keep all his statutes, I will put none of the diseases on you, which I have put on the Egyptians; for I am Yahweh who heals you.'" Exodus 15:26 WEB. Lastly Jesus said, "He who remains in me, and I in him, the same bears much fruit, for apart from me you can do nothing."John 15:5. You are not helpless you are fully enabled in Jesus.
God is looking at all of our hearts. Lastly, "And whatever you do, in word or in deed, do all in the name of the Lord Jesus, giving thanks to God the Father, through him. Whatever you do, work heartily, as for the Lord, and not for men,...You are servants of Christ, doing the will of God from the heart." Colossians 3:17,23-24 WEB.
God will lead you and heal you. We are praying with you.