Take the time to pray and truly look deep within yourself. There are arguments both in favor of and against the option of giving this a try, but in the end it's you who knows whether you should be pursuing this or not. Follow your intuition, as it is through that that we are more likely to be able to hear what God is trying to tell us.
A priest friend of mine was telling me the story of how he came to realize that priesthood was his calling...it was actually through a priest that suggested he joined a seminar for a while, for him to just give it a try and see what he thought of it. Before this he didn't have any intention at all of pursuing religious life, he was studying engineering and that's what he was planning to do with his life. In the end, he decided to follow the priest's advice, hated almost every second of that experience, until one day, when he was decided to leave and go back to his regular life as an engineering student, he felt that call, loud and clear, and he knew he was exactly where he was supposed to be. He is now the director of a big orphanage run by the Capuchin Franciscans, here in Peru.
Like that, I'm sure there are a bunch of other stories that could very well tell you 'go ahead with it, get rid of that fear of leaving your country, and give this a try!' such as there will be other stories that will tell you 'that isn't fear, it's your gut feeling telling you you shouldn't go'. In the end, it can be either, but none of us can figure that out. You've got the answer. It's tough, for sure, but trust and have faith. Also know that, whatever you end up doing, it won't be a mistake. It will be what you are meant to do, and the experiences that await you are wonderful opportunities for you to learn more about yourself, to grow, and to keep nurturing your faith in God.
"Trust, Surrender, Believe, Receive." Don't be afraid, allow your mind to calm itself down, and listen to your heart