Are you sure these were palpitations? I used to get them regularly. Then I got my thyroid straightened out and things were somewhat better for awhile.
Recently I was diagnosed with gastritis and GERD and had a terrible attack of pains up in my esophagus that felt like palpitations, but painful. Found out this was esophageal spasms from the gastric issues.
Sometimes they fool you.
Diagnosed with MS 2001. Fibromyalgia, Graves Disease, IBS, Gastritis, Spondylosis, Degenerative Disc Disease, Sjogrens, Osteoarthritis, Osteoporosis, Tendonitis, Costochondritis. All the autoimmune diseases are attacking me. Taking the minimum of medications.