Laptop seemed dry even though my bag got wet, turned it on and now just read I shouldn't have done that.

So I was walking home from school and all of a sudden it starts to rain hard. It took a while to get home but my bag was absolutely drenched. Surprisingly enough however, everything inside (save for some papers) were not wet. I turned my laptop on when I got home to see if it was ok and all keys functioned fine and screen was ok. After a while, I saw online that you shouldn't turn it on after potentially getting wet. Am I screwed? I didn't use it for long, I just checked, and now I've left it to dry but I'm worried I've messed up greatly.