God thinks health all the time: About Jesus, it is said:

"He is the Savior of the body"

Ep 5:23

And:

"The Lord [is] for the body"

1 Cor 6:13

If Jesus is "for the body" he is also against diseases, for they are harm to the body. He demonstrates this clearly in his work on earth: 

"He received them and spoke to them about the kingdom of God, and healed those who had need of healing."

Luke 9:11

There is no doubt about his plans: Complete healing for all who are sick. We are always welcome to seek him in faith, again and again. Then, in the long run, we help to unleash faith. We are then involved in building a "platform" of faith to use when the answer to prayer comes. We prepare ourselves and are then ready for his coming.

God collects our prayers in the prayer bowl of heaven (Rev 5:8). When it is full, it is emptied and the answer to prayer comes (Rev 8:3–5). Keep praying until the answer to prayer comes. 

"And He spoke a parable to them, that men always ought to pray and not lose heart."

Luke 18:1

Wait patiently for God to come!