When did I get so old???

So as many of you know I took my practical test last week, and I have been super stressed about it lately...waiting to hear if I passed. Well...I heard a teacher say that if I passed I would be able to look up my license number online within 3-5 days, so like an obsessed person, I have been checking the website everyday...all day long. Well, as of this morning I still couldn't find my name ANYWHERE, so I instead of worrying about typing my name correctly like I was before, I began to worry if I passed. And if I didn't pass, it would be so embarassing and I would have to wait another 2 months and have to come up with the money all over again. Anyways, long story short, I got my license in the mail today. I was going to try and wait until my parents were here this weekend, but I couldn't help it. I HAD to open it.

So then...instead of being super excited and happy, I began to worry about how long it is going to take for us to get caught up on bills..and will I be good at what I do...and did I make the right career choice. I don't ever remember worrying like this. When did I get so old that I worry about EVERYTHING???