The location of the pain with some radiation
to the back and the recurrent
nature of the pain indicates, that you are sufferring from recurrent
, inflammation of your pancreas
. Elevated Amylase
and Lipase supports this diagnosis.
Now, as to the cause of this, there are many.
One is alcohol excess, second is associated gallbladder
there are Viral infections, auto-immune causes also for this.
There is also a small percentage of patients who don't really have
a cause and this is called "Idiopathic".
You have had classical symptoms of nausea, vomiting
pain. I don't think miralax is going to cure this.
You need to have a gallbladder sonogram and a CT-Scan of the abdomen
to get a good look at the pancreas. Depending on the findings, you may
need additional studies and treatment. Please have these done ASAP.
I wish you well.