I have the same problem you do. Although the doctor has told me it is nothing to worry about, it still bothers me when I feel it.
I only drink herbal teas now, because even decaf teas and decaf coffees have some caffeine. I can't seem to tolerate any at all. Good thing I'm not a chocoholic!
I like Celestial Seasonings Sleepytime and Bigelow Perfect Peach