Logged into a wrong account with right password, help please

I reset my computer today, and I am currently installing my games back. I just now installed battle.net to install Overwatch. But it said I had no games, my account was called Trayq#21812 but now all of a sudden when i logged into the account it was called Trayq#21169. I don’t have a problem with the name changing but i lost my games and pretty much my account. On the online browser it says that i have the games and was last played 23. november 2018. Which is all wrong because i last played it today! I am hoping for this to fix itself… but I don’t know. It’s like my account just dissapeared after just a PC reset.