Would i be able to get a new code if someone bought me a code outside of my region?

Your friend would have to try returning it and purchasing one for your correct region. Otherwise, you could try selling it somewhere and then purchase one from your region.

I've entered hundreds of codes from 2006-2014 and this issue hasn't happened ONCE then. 2015 and 2016 some codes don't seem to work and I've had my region the same since '06. This is something new to me so I guess I understand what your saying, "codes bought
from one region outside of US might not be able to be used on a US account".

No. The region is based on your account region, not the console or website itself. To purchase for someone outside of your region, you would need to buy a code from a website that sells them for that region and send them the code.

If I have xbox live membership and i get a new code for a different region to get a memebership again will i have to wait for my xbox live gold to expire and then change regions to use the new code?

Gold membership codes are region locked and can only be used for accounts that are set as the same region the code is for.

In this particular case, if you've moved to the region you're purchasing the code from you would be able to change your tag and use the code right away.

Ok, so can someone explain to me, i bought medal of honor limited edition new, if i sold it, would the next person be able to get the beta, (i redeemed the code) and, if i sold it, would i be able to acces the beta without the disc, thanks