The only person that, can help you andtell you What !? is wrong with you is your Doc,,,,, because people  are different in life style, behavier activities, and worries and problems so it could be any thing, my cousin had this same problem and she went to see her Doc. He said the problem was 
stress relative and she  had too wear a monitor belt around her harm and when ever something happen, it will pick up all of her feelings  emotions and record all of  the things that was there she keep it on for 2 days especialy at work, he ended up giving her some Anti- 
depression pills, so we are not Doctors we don't know, we can just give you some  help and imput, do the right thing go see your  Doc, i wish you the best, love peace and joy, and don't worry too much, every thing is going to be fine, once you go to your doctor.Trush in God!