Junior High Scares Me

As y'all know, I've just started junior high and the thing that bothers me is the extreme differences of some people. For example, some kids do drugs while others have never even touched a beer bottle. I didn't really know anyone ever on the bad side of the differences except now. There's a rumor saying someone (I'll call her M) is pregnant. Like, there are some girls in my grade that have never even had a crush! M was in my class in 1st grade which was a long ago and she was kinda my friend before she became popular so I kinda hope it's not true but kinda not care at the same time.