Constant Palpitations.?!

Constant Palpitations.?

since about a week ago ive been having constant palpitations..prior to this within 2 months ive had several ekgs,chest xrays.blood taken,24 hour halter monitor,heart stress test and echocardiograhm cause ive been having chest pain also nothing was found wrong..im going to be going back to my dr to see what else we can try cause he thought it was my gastritis so he gave me a med but it didnt help..but these palpitations are very uncomfortable since last week its every day and happens the majority of the day..could stress and anxiety be causing it to happen constantly even when i dont feel like im stressed or having anxiety or what else could be going on considering i got pain and palpations but my heart rate is regular and between 70-95 depending on what im doing

2 weeks ago
actually im 21..they kept giving me all these tests cause they couldnt find anything wrong and they were trying to ease my mind but it really hasnt eased my mind cause nothing has improved even with me being calm like i said i dont feel anixety or stressed i do have a hisotry of anxiety and stress though

Since you are having chest pains and the doctor has given you clean certificate of cardiac pathology, now the possible causes are:
GERDs
Chostochondritis/ cervical spondylitis
Stress and Anxiety states can also be a cause.
Hyperthyroidism.
Discuss with your consultant on these lines, OK and by the way Smoking, & overindulgence in alcohol, excess coffee are also causes of palpitation, review them.