MISSING SIM

HI GUYS, so my sim and one of his brothers lived in a university apartment and I got the enrollment pop up for one and I enrolled him in another school year and in a university housing instead of that same apartment this time. then it was time to enroll the second one and I mistakenly refused the enrollment, I realized this, and I got a notification to pack out. I was so impatient and decided to enroll my sim for another term, I succeeded and I moved him into the same housing as his brother but now I can't find that particular sim anymore. 

What's even more annoying? I saved the game.