While I agree that you are awful young to be havinf sex. If you are old enough to have sex, and get possibly pregnant, then you are old enough to deliver a baby. Chances of dying in childbirth today is very rare, and is usually caused by some underlying issue, not the pregnancy its self. Listen little one, you need to be more careful. I will tell you like the others, you shouldn't be having sex, that being said you already have and face an awful grownup descision, but you have also acted as an grownup by having sex so early in your young life.
Do yourself a favor, wait till your period is due, if you don't have it with in a day or two, go get a test. WHATEVER the test is, you need to sit down with your parents and tell them what is going on. Be sure to tell the that you were SO scared, and still are by telling them. They will be upset, as someone who loves you dearly would be at such news. Then if the test is positive, discuss with your parents, not your boyfriend, your parents what your options are. Yes abortion is one that you can choose. But think of this. You are already scared because of the possible pregnancy, don't harm yourself any further by having an abortion done. There are adoption agencies out there, where the adoptive parents will pay for all of your medical care. There are even options of an "open" adoption, where they will send you pictures of your little bundle as he/she grows. Then maybe later in life you can have a "friendship" with this child. PLEASE let your parents know, they love you and will support you, even if they are upset with you. Keep us posted, and little one, your not alone.