Why are there so many teen parents?

Teenagers have been getting pregnant for years now it's not just this generation, Its the media who just brings it more to our attention and years ago when you were a teenager and pregnant you didn't really tell anyone so no one really knew but now teenager girls who are pregnant don't care and they wear clothes showing their baby bumps or tell people their pregnant. Im 19 and im pregnant im not sorry that i am, im in a loving relationship and getting married next year, Also alot of teenagers where i am (Australia) don't want abortions they want to care for their child and want to love them. I think also the media shows pregnant girls in a bad light what about the boys who get them pregnant they say nothing bad about them the girl gets labeled a slut or irresponsible no one ever says anything about the boy who got her pregnant, also the pulling out method doesn't always work you can still get the girl pregnant.