How do I check if I have a playNC account?

I remember trying to make a playNC account, but I cant remember if I actually made one. I checked my e-mail and I dont have any e-mails about it, but I don't see anyoption to make a new account anymore when I go into the online store... so how can I check if I even have one or not?

Click on the store after you sign in and see if you get in