Hello and hope you are doing well.
The enzyme levels are elevated in liver disorders. Besides this they are also elevated in conditions like muscle injury and sometimes due to medications. If you do not have symptoms of liver disease like jaundice, nausea, vomiting, abdominal pain and fever, I would advise you to wait for now and repeat the test after four weeks to see how the levels are progressing.
Hope this helped and do keep us posted.
I wish I could help more but it seems an MRI is needed to see the condition of your liver and your brain. The ultra sound will diagnose the condition of your liver and is something that can be performed right away. Sometimes it can take a while for an MRI but is worth mentioning to your doctor.
This Testing should have been done a long time ago when the migraines began. Do not allow your health to be put on hold. You have serious issues that need prompt attention. Take good care of yourself. Like you said, your children need you :) Also it sounds like you should be on medication for acid reflux (GERD). It works very well.
Randy