Hear me out. I might be wrong but if I were you, I would not contact them. It'd only affect you if your employer notified them for it. And you'd know if they did or not because CIC or PNP would have contacted you to verify with you. Even then it wasn't your decision to leave the company.
So please be patient about all, don't panic and I hope you find a new job soon!
BEST OF LUCK!