You've got a good head on your shoulders. You shouldn't even be thinking about children until you have graduated college, have a career, and are married. At the least, you should have a well paying job to take care of yourself and be married before kids. If you decide to stay at home, that's fine. But, if you want this, you need to protect yourself by using birth control and condoms. Do not ever count on the man to do it. And, you need to be attracted to the man you decide to marry. If you find a good looking Japanese man great, but there are good men all over, just hard to find. You're not going to find one at 18 more than likely. Men usually want to settle down after they have a good career, in their late 20's to their late 30's. Best wishes to you.