Prenatal care is absolutely necessary. I was 18 and pregnant, and I just want to tell you, you're going to change your life, permanently. Being pregnant is not easy, having labor is not easy, and having a baby to raise is not easy, especially young. However it is the most rewarding and amazing experience you will ever have in your life, so it's all worth it. I don't mean to scare you, but you need a lot of support and I would tell your parents as soon as you felt comfortable enough to. Say good bye to those teenage years, school is going to be so hard to go to, and your social life will definitely suffer when you have a baby, let alone be the pregnant one out of your friends. Tell your parents together, that way if you tell your mother or father first, the other parent won't feel ganged up on and lied to (personal experience)It also might be better if your partner/father of the baby is still in the picture to not be here when you tell your parents. The sooner you tell them the more responsible they think you're being about this Don't lie to them about anything on how you became pregnant.. You're 15 and they have a right to know who the father is if they ask. Make a game plan with them, where the baby is going to stay, how you plan to provide, who is going to watch the baby while you go to school.. It'll show you have out real thought into this and you're taking having a baby seriously.I wish you the best of luck, though. My baby is the best thing to of happen to me. And I'm sure you will feel the same way when you see him or her for the first time. It's going to be hard but worth it. Congrats!