Trazadone 100 mg has been causing me chest pain near my heart in the morning. I have trouble staying asleep. How should I talk to my doc bout othermed?

Simply talk w/doctor. Most doctors want to know when their patients are having difficulty, especially with a medication they have prescribed. Simply describe your experiences to your doctor. Tell him/her you feel this may be related to the trazodone. Please know that there may be other possible causes of this problem, but a discussion is certainly warranted.
Just be frank. If you are experiencing chest pain with Trazodone and it isn't helping your sleep, you need to come right out and say. You and your doctor can discuss other options.