This guy from Young Living said that Young Living's Frankincense oil is the only oil safe enough to be taken internally. He said to drop a few drops into a beverage that has a fatty content like rice, almond milk or coconut milk. The fatty content helps to emulsify and helps the body to absorb the Frankincense throughout the entire system and lengthens the impact of the Frankincense and its theraputic effects over a longer period of time and to different systems of the body. He said it prevents the rapid reproduction of abnormal cells.
You are in my prayers. Don't lose hope. Don't let those doctors upset you. Being mad and upset is not helping your symptoms. These emotions only make it worse. Let it go. "A merry heart doeth good [like] a medicine: but a broken spirit drieth the bones." Proverbs 17:22. Know that your symptoms of cancer have no authority over you when you are in Christ. He is the Great Physician. Seek Him for your healing as hard as you are seeking herbs, essential oils etc. Just do it. What do you have to lose? See what happens when you do it. I heard a testimony several years ago of a man and wife who were disabled. I was trying to find the story for you, but I couldn't. I will just write what I can remember. I think they were in an accident. I can't remember the details. The wife was much worse and could hardly function. Anyway the man decided to get very serious with God. He was tired of living this way. He sat his wife and himself up to a table. He put on some healing tapes. Next he told God that he was not going to stop seeking Him for healing until He healed him and his wife. They sat there all day and prayed and listened to those tapes to build their faith. I don't remember how many hours they sat there. I think it was way into the night. Anyway after all those hours he first got healed. He ran outside and hollered with joy. Next, he came in and picked up his wife and told her we are healed. At that point she got totally healed and she was really a mess. I don't think she could even walk or talk. When we get this serious with God He moves. That has been my experience too. Here is a healing tape and the tape on Frankincense that I referred to. I am praying for you. You can find many healing tapes on youtube.