Kijiji scam

Today I post some stuff on kijiji it’s first time to sell something on it and after teen minutes I’ve got a message from stranger number asking me my wife liked your stuff and want to buy it and he said you can connect with her by email I accept that and start to connect her on email at first it was every thing normal until she said want to pay by Bank Draft It was a little bit weird on me , after talk and talk I accept the Bank Draft Deposit She send me more n than i posted , it was a little bit strange I did deposit the money into my account and she said she will send agent to take the stuff but at the same time i was worry about what happen and she send me again another email to return whatever left actually I didn’t trust her and I connect my bank and they said it is scammer she keeped send me a lot of messages but I didn’t respond , should I worry about my bank account? Or what should I do? Please any help, even though my bank amount was zero ( empty ).