Teenage pregnancy is such a problem now and I dont understand why.
One of the concerns of teenage pregnancy are the same concerns for other pregnant women but in addition to that, those under 15 are less likely to physically be able to sustain a healthy pregnancy, they may not be physically developed enough to give birth. That is definitely a problem
I have heard some school even have day cares now
Yes, roughly 80% of teenage pregnancies are unintended, part of the reason why is because some cultures limit or discourage acress to birth controll. They consider it to be morally or religiously bad. People also harass planned parenthood clinics, this leads to less acess to resources at risk pregnant teens or pregnant teens need
I think it could be the media putting out suggestive messages that is causing some of this.
Yes, some media output, some religious output, and also the lack of competent s-x education plays a part. S-x education is supposed to cover all aspects relatedto s-x but a lot just preach abstinence only instead. 
I think it rest on the parents to teach their kids about it so that they can prevent unwanted pregnancy.
Unintended pregnancy
Unintended pregnancies are pregnancies that are mistimed, unplanned or unwanted at the time of conception. Unintended pregnancies may also result from rape or incest.
Vaginal sexual activity without the use of contraception through choice or coercion is the predominant cause of unintended pregnancy. The incorrect use of a contraceptive method, and failure of the method chosen also contributes. Available contraception methods include use of birth control pills, a condom, intrauterine device (IUD, IUC, IUS), contraceptive implant (implanon/nexplanon), hormonal
for any sex. Campaigns for unisex toys include "Let Toys Be Toys".
Biology Teenage pregnancy.
Teenage pregnancy is pregnancy in an adolescent girl. A female can become pregnant from sexual intercourse after she has begun to ovulate. Pregnant teenagers face many of the same pregnancy related issues as other women. There are, however, additional concerns for young adolescents as they are less likely to be physically developed enough to sustain a healthy pregnancy or to give birth.
In developed countries, teenage pregnancy is usually associated with