future question mark

I've been so scared lately. I don't know what I'm doing with my life. Yes, I realize that most people don't know what they're doing with their lives.  And I know I'm still very young and I have plenty of time to figure it out. But it's a scary feeling nonetheless.
I'm graduating with an Associates degree in May.  I don't know what I'm doing after that.  I thought that I had it all figured out. I was going to transfer to a nursing school closer to home and become a nurse, find a man, get married, raise a family.  But I'm starting to discover that it's a whole lot more complicated than that.
I've never really had a job.  I've only ever gone to school. I'm really good at going to school.  I'm good at doing homework and studying and writing papers and all that stuff.  I don't know if I'll be any good at having a job.  I'm starting to think that I'm silly for thinking I want to be a nurse.  What do I know about it?  Very little.  I get scared talking to strangers.  I don't know enough to take care of people.  Can I really help people?  I just don't know.  I'm just doubting myself.  I know that most of these things can be taught and learned.  But I'm scared.  I always freak out about things.  They usually work out, but it's so hard for me to see that.  I just get stuck in the freak out.
I'm second guessing myself about the whole nursing thing.  But I don't know what I'd do instead.  Like, what else could I major in?  Long pause while I think about it.  Yeah, I've got nothing.
I really just want to be a wife and mother.  But then I feel like I could do so much more.  Like what was the point of going to school for the past fifteen years if all I'm going to do is be a wife and mother?  I don't want it to be a waste.
I just don't know I don't know I don't know.