I'm traveling to Pachuca, Mexico in a few days with my university. This will be my first time in Mexico, and of course, I'm nervous about getting sick!

I have a very sensitive stomach, and I'm not sure of a some precautions I should take, other than not drinking tap water or eating fresh fruits.

I'm determined to have a good time on this trip and not worry about getting sick. Does anyone have any other good tips on what to eat/what to avoid? I would really appreciate it!