Constant notification noise and vibration.

[AC Question]

Last night I set up my phone to a 3rd party watch. Got it working and then this morning took all the apps I installed back off and reattached my pebble watch. Before I even reattached my watch my Samsung Galaxy 7 edge. Makes a notification noise and vibrates about every 10-20 seconds. It's driving me mad. I have ensured the NFC is off and restarted the phone twice. Everything seems to be wirking but this stupid noise and vibration. Help!!!