Bunny, I prayed for you tonight. I prayed that God would heal you, and that He will give you comfort and strength. Praise God they found the problem. You said you love to read, and so I would encourage you to read as much of the Word as you can. When we have the word in us, it helps us to navigate truth...it lights up the path of Christ and keeps us from sin and deceit. Not only will reading it bring glory to God, but I think it will help you with fear, and with other thoughts that may cause you to struggle. Our emotions aren't always the reality, but God's truth is. I prayed that God would also heal the bipolar problems, build your faith through all of this, and bring glory to Himself with this situation.
The Lord bless you.