I have pain in my neck and throat (Near Collar Bone, Right and left side of the Larynx, I notice the pain during the evenings, before meal, and whenever I feel stressed. But the pain is not constant, it is on and off. I am not able to decide whether the pain is causing because of gastric stress, Mental stress or Nerve stress or anything inside my neck. I have digestion problems from past one year. I don? t have any other habits. I am non vegetarian. I drive bike 70 kilometers every day in traffic. I have this from Past 8 months. Please let me know what tests I need to undergo to find out the problem.