For a female-teen-ager under 18 years to get pregnant as part of a "male & female couple" she must have been legally-married-contractually with the signatures of each of their, her & his, "two" "male & female biological-parents".
Pregnancy cannot take place without a legal-marriage no matter what the age.
Birth-control-pills can only be prescribed to a married-woman who has legally-claimed "rape" against her husband of legal-consummated-marriage by a court-psychiatrist.
Teen-pregnancy "fault(s)" almost always falls upon the original-birth-parent(s) of the married-couple which has either one or two teen partner(s) in the marriage.
An abortion can only take place when the unborn-child refuses the "birth-mother" as a "source of birth" because of her medical-status.
Im sorry topic starter but I have to disagree with you on your post. But I also have to agree with you for parts of your posts. To get married under the age of 18, you are correct. You must have written permission from the parents of both parties. As of having sex there are regulation for every province/state/country when a teenager may start having sex. In ontario it is legal for two 14 year olds to engage in sexual activity. 14 is the age where you may engage in sexual activity. Now I am not saying for 14 years old to do so, but if they do then that is there business. Dont forget each country and state/province have their regulations. By the way what country, state/province are you refering to?