How can you get into Med school without haven taken pre med courses?

Answer 1

Whatever med school you are considering going to, find out what their prerequisites are. Take the MCAT and pass with a high enough score for that school. You will need letters of recommendations.
You don't have to major in pre med to go to med school. You can have any major.

Answer 2

I don't think you can do that in the States, but you can other parts of the world. You would need a college diploma to gain entrance into a med school. Figure out which region you wouldnt mind going to then see the prerequisites of the particular university.