Accidentally changed wifi security key?

[Sheraden]

I was trying to connect my ipad to my internet but forgot my wifi password. so I Googled how to retrieve it and I did what it said which was to go to the network sharing center and right click my network. then, I clicked properties and it took me to a tab called "security". it had a box with the network security code in it and when I pressed "show characters" a code with random letters and numbers showed up. I stupidly changed that code to my own password without writing the previous code down, and now, my laptop won't connect to my network. how screwed am I?!