I entered the States on a B1/B2 and No AOS / No EOS was stamped on my I-94. I am allowed to stay in the country only until Aug 22. I also got my F1 to start school in Sep 12 but due the circumstances I would have to leave the country and reenter it on my F1. I am from South America. Is it ok if I just go to Mexico for 1 day and reenter the States? Should I stay longer out of the States? Should I go back to my country instead of another foreign country? Why if I go to Mexico on the 21 of Aug and come back to the States on my F1 on the 22 of August? Would I have any problem trying to reenter to the States?