Warrior Queen, let us join together in seeking God's will and guidance as you embark on this journey of fasting and cleansing. We commend you for turning to God for help and relying on the power of Jesus' name for your needs, which is the only way to God the Father. There is no other name under heaven given to men by which we must be saved. And this fasting must be for God's purposes and His glory.
We are reminded in Isaiah 58:3-4, "'Why have we fasted,' say they, 'and you do not see? why have we afflicted our soul, and you take no knowledge?' 'Behold, in the day of your fast you find pleasure, and exact all your labors. Behold, you fast for strife and debate, and to strike with the fist of wickedness: you shall not fast as you do today, to make your voice to be heard on high.'" It does not appear that you are fasting for any purpose that is forbidden in these passages.
The issue of toxins in the body is one that is primarily a physical and medical issue. While we pray for healing and believe that God can perform miracles, we also recognize that He often uses medicine to heal. Trusting in God does not mean we should not use the tools of His Provision. Do not be discouraged from seeking medical advice on the issues you deal with. Do not let any pseudo-medicine or substance replace your faith in Jesus.
As for fasting, in 1 Corinthians 9:27, the Lord tells us, "But I buffet my body, and bring it into bondage: lest by any means, after that I have preached to others, I myself should be rejected."
Please note that nowhere in scripture does the Lord promise that fasting will remove toxins from the blood. The purpose of fasting is to draw closer to God and rely on him, it is to let the Holy Spirit replace the food that we do not eat. It should be a sacrifice that only God could ask of us, because we love Him.
So, if your doctor is in agreement, it is a good to fast as directed by God's words. Some fasts may be partial fasts where you might just eat vegetables, or drink only juice. That can be a safe way to begin.
Prayer to submit your appetites and desires to Him:
Lord Jesus, we come before You with Warrior Queen, seeking Your guidance and strength as she embarks on this fast. Help her to rely fully on You and not just any doctrine of man. Equip her with the tools and knowledge to fast in a safe and meaningful way, being the only way through your grace and mercy. We thank You for the cleansing power of Your blood, and we pray that her body will be unto You a temple of Your Holy Spirit. We pray that during this prayer and fast, You will draw her closer to You and help her to grow spiritually. During this fast, we pray for Warrior Queen to experience the full power of the Holy Spirit, giving her the healing that You have determined for this situation.
**Remain in prayer**, waiting on the Lord for His direction. He may speak to Warrior Queen in His quiet voice, whether He is asking her to not worry about toxins or to seek medical care.
Go in faith. Stay strong in the Lord in Jesus name