I really want to start going college what should I'm not from the US and i all ready fail the GED test?

i got a big problem.. i really want to start going college but i don't have my High school diploma or GED ... why? because I'm not from the US i came to NY about 4 years... from Colombia i try with the GED test but i failed MATHS ... so there's any problem if i bring my High school diploma from my country ?? and try the TOEFL and everything again...... even if i all ready did the GED test?