Hello Friend, Good that you are seeking a help here. Negative dreams, sleeplessness are symptoms of anxiety. Such mental disturbance will also impact body function with discomforts like nervousness, body pain, lack of appetite, constipation etc. Reason for such symptoms could be over thinking about some past bad experiences, career, failed relationships or sometime your lifestyle routines. No worries, it's a recoverable with a counseling and adoption of few lifestyle routines change.. Reach out a psychology counselor first to share what's happening within you and get an assessment of the problem and root cause. Then the possible solutions can be evolved.
Next Steps
Reach out a psychology counselor f2f or online chat through Practo app which ever is convenient..