So tired...

I have had chronic lumbar back pain for ten plus years now. It's been nearly impossible for me to sit for more than 20 minutes doing most of the things I enjoy most, which includes sewing, crafting, and reading. I went and saw a medical doctor in early august, and he recommended physical therapy. My consultation was this past week and it went well. My first appointment is next Friday.
Other things that I have been doing to try to help is going to work out. I joined a gym and have been going at least 4x a week.
The most fervent thing I have been doing is praying. And now I'm asking others to pray also. I know it's a lot to ask for...but please pray for me every day. This is what I posted on my church's prayer website:

"My brothers and sisters in Christ, please pray for me. I am having another severe bout of lumbar back/spine pain. I am praying every day and I am getting angry that nothing I do physically or spiritually is helping. I know that the Lord is giving me this trial to further His glory, but I am tired of not being able to move to the best of my ability. I am tired of the pain. I am desperate for some healing. Please, please pray that God will heal my back. "

The bible says in Matthew 18:19-20, "Again, truly I tell you that if two of you on earth agree about anything they ask for, it will be done for them by my Father in heaven. For where two or three gather in my name, there am I with them."