I do get the shakes all the time. Sometimes there just on the inside and sometimes there inside and outside. It does seem like it takes forever for them to stop and they just kinda come and go there is nothing that sets them off. Dr said it a part of my anxiety and the meds I am on seem to help some I don't have them as often as I have in the past. Hope this helps hun keep us posted on how your doing.
many possibilities including hypoglycemia, that is low blood sugar, try drinking some soft drink WITH SUGAR IN IT
and see if this stops it