Is psychiatry a realistic goal? should i consider caribbean schools?
Depends how much you want the M.D.
I would not consider going to a Carribean school unless it was one with a solid board-pass rate. Some foreign medschools have pass rates less than 50%. It's not worth it IMHO to put 2 years of your life, about $100K, only to not be able to pass the board exam. Further, the foreign medschool should have some solid connections with hospitals in the US to do rotations.
You could also pursue a D.O. they are not as competitive and M.D. schools. There is some stigma against D.O.s, though I have met several capable D.O.s and do not think the stigma is warranted.
If you like the behavioral sciences, be in for a shock when you go to medical school. Less than 10% of your curriculum focuses on mental health. It's more on the order of memorizing thousands of slides of various diseased cells vs. healthy cells, cutting up a corpse, and mastering biochemistry.
I know because I was a psychology major, and wanted to be a psychiatrist. I had to endure 3.8 years out of 4 years of a non-mental health curriculum, and well, IMHO medschool education is dehumanizing. You have to live in a state of extreme self-denial for 4 years. It was worth it, but you got to remember that this is a marathon. You're not going to get to your goal until way way way down the road, all the while doing things not very much related to mental health.