Oh forget, I forgeted up big time.
I made some spam email account because I couldn't remember the password to my main EA email account at the time and didn't want to use password recovery on it. I registered my serial key on that spam email account which doesn't exist and now I forgot the password to it which isn't one of my commonly used passwords. So now, I can't play online, but luckily I am able to get back into my main. Still, I have the serial key but it is on the account I can't access. I am an idiot. FML
Any advice? I would seem really stupid in front of customer support with this, but I might have to go there.