Back side head pain and back pain. Pain.

Hello Doctors, I am having back side head pain from long time but its not frequent, this pain normally comes and go and there is throat sore which is not going away and if any cold items i will consume the back head pain wills start and also fore head. Now i am having back pain since almost one year, i have consulted orthopedics he suggested me to do MRI, also its not showing anything he told there is some mild bulging there is no issue also i could feel there is bladder dysfunction like i could feel there right side lower abdominal pain and loosing weight (i was 80 now its around 73 to 74) and this back pain is more during early morning and i am feeling more hungry like after taking food within 10 to 15 mins i will feel hungry also am facing constipation issue. Am totally frustrated i am consulting since last 2 years but no use, please suggest me if anyone can help me am totally hopeless. I am not concentrating in anything due to this pain.