I was in Mexico for 2 years from 2004-2006 as a missionary for my church. I was sick for the majority of the time, with a variety of symptoms. After returning home, things got better, but it wasn't very long before i got sick again. My main symptoms have been: Fatigue, headaches (top of the head and they last all day.it is a constant pain that i have needed oxycotin prescribed to help with the pain.), loss of appetite, sensitive stomach, i heal slower, and i have major trouble waking up.