Can 3 month long chronic stress and anxiety cause whole body pain, stomach bloating, belching and fatigue? When anxious I can feel my heartbeat in neck..

Prolonged stress. can produce the symptoms you mention and lots of other ones. Please see your doc to rule out medical conditions and then a mental health professional to learn strategies for coping w/stress. Peace and good health.
Although chronic . stress and anxiety over an extended period can cause all kinds of physical disorders, it is always advisable 2 have the physical symptoms checked out by a physician before assuming that it's all due 2 stress. However, if U know U R stressed and having tests done with your Doctor, why not start working with a clinical psychologist and learn ways 2 reduce stress and anxiety ASAP? .