Out faith is precious to God. Much more precious than the flesh we wear while on this earth. Gods physical healings noted in the scriptures always point to the much bigger reality, in that he can heal us spiritually, and cause us to be new creatures in Jesus Christ, to be born again.
God can and will take us on roller coasters we don't think we can handle to try our faith like gold in a furnace. But, if your name is written in the lambs book of life, be of good cheer, for nothing in this life is worth comparing the the gloriousness of what we will be at his coming.
We aren't promised physical healing. But God is not heartless, and he still miraculously heals people today. Don't stop seeking to be healed, but more so than that, seek first the kingdom of God, and his righteousness, and all these things will be given unto you.
Blessings!
Travis