Glad that you are getting settled in. Yeah, the culture shock can be extremely rough if you've never dealt with it. You'll get used to it. It gets better. Oklahoma will be here when you get back. I was lucky in that I was 18 when I hit the culture shock. Happened to me in Lucerne Switzerland. It was during the second week that it hit me hard. That night, in the hotel room, I was listening to USO radio and Bob Seger's "Turn the Page" came on. Everything went back to normal and the homesickness went away. I hope you can find something that does the same for you. Just think, you have access to a lot of different cultures to get immersed in. It will be worth it in the long run.
Now, every time that I go overseas, I don't want to come back to the US.

Hopefully I'll make it to the isles this summer.*