Thanks for your reply.
Basically based on your history and symptoms I would suggest that you consult your doctor about whether a sleep study is indicated, because I think it is. Some of your symptoms can be due to the disturbed sleep or inadequate sleep itself. Hence treating the sleep disturbance by improved sleep habits, and if required medications may be beneficial.
Another advice would be to get assessed for depression since you are having some of the symptoms of depression. And if depression is present then treating it with therapy and/or medications will be beneficial and your symptoms will improve.
Lastly some of your symptoms such as headache may be due to the side effect of resolor. However the heavy head may also be due to sleep disturbance.
Therefore have the investigations such as sleep study done, and consult a psychiatrist for assessment of depression, and if any cause is found, treating it will relieve your present symptoms.