Could Palpitation Of Heart Be Due To Stress?

Hi there. I am just wondering how too go about this situation. I've been to the different dr to talk to then about a back issue that I have and also stress. I am so stressed out I have not slept decent in over a week and my is out no and I can barely walk. I can constantly feel my heart rate and am jittery all the time. I get so frustrated and angry over every little thing lately, and there is no sex life left in me. My eating habits are totally random, and I just don't know what to do. I can't get any dr listen to me and none of them have even done so much as taken my blood pressure or anything when I've went in