I Have Had Insomnia For 4 Months. This Last Week

I have had insomnia for 4 months. This last week I've awakened after 2 hours with my heart at 130 or more and it takes 30 min to go down and I can't go back to sleep. My doctor is wanting me to do a Halter monitor and perhaps an ablation. I feel if I could sleep, my heart could rest and heal, so would like to try a different sleeping med (currently on Trazadone). I'm feeling desperate after so little sleep. Your thoughts?