Heart arrhythmia at 29 weeks pregnant

We are asking for prayers.

I am 38 years old and pregnant with my 5th baby and only baby boy. After I had my 2nd daughter I developed a heart arrhythmia which lead to a cardiac ablation in 2009. I have not had any issues in till now. The arrhythmia is back. They are treating me with Meds and I am on bed rest. My OB has spoken with a Cardiologist and I am having a EKG on Wednesday. I am 29 weeks pregnant so right now it is about maintaining a steady beat as long as possible. They say baby Ezra is doing great! But I am very concerned that I will have to have him to Early. Please ladies pray for my baby. I only want him to be healthy.