How come, at age 18, i am constantly thinking about having children, even *dreaming* about it?

See below: Often this can be peer pressure, your friends have had kids so you feel you should to. Think about this; can you take care of a child on your own right now, can you support yourself and your child. If the answer to any of those questions is no i would recommend waiting. There is no prize for having children early. Talk to your councilors about your concerns and wishes.