“And base things of the world, and things which are despised, hath God chosen, yea, and things which are not, to bring to nought things that are:”
1 Corinthians 1:28

God uses things that are not to bring to nothing things that are. When he comes in contact with cancer, any other disease, foolishness, he uses that which is not to eradicate the disease and the foolishness, when he’s done, health and wisdom becomes.
The fact that it can eradicate that which exists means ‘that which is not’ does exist and is real but cannot be perceived with the five senses even though it is powerful enough to influence that which can be perceived with the five senses.
Great news! It means if we know ‘that which is not’ and we have access to it, we can bring to nought that which is; things we have to change, difficulties we have to surmount, we can use ‘that which is not’ and influence the outcome in line with the word of God.
Now the bible says:
“Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.” Hebrews 11:3
He tells you that the word of God is that ‘which do not appear’ but made everything that can be seen, ‘words’ are ‘that which is not’ but can influence and bring to nothing that which is.
So Jesus used his word and brought to nothing the violence and turbulence of the raging wind and water:
“…What manner of man is this! for he commandeth even the winds and water, and they obey him.” Luke 8:25
Consistent migraines and pains are real, use the more effective word of God and bring it to nothing- by his stripes, ye were healed!