Please my follow super mom's, am a first time mum Am 38weeks and 4 day…

Please my follow super mom's, am a first time mum Am 38weeks and 4 days pregnant, I just saw this discharge from my vigina this evening, please is this the show abi mucus that show sign of labour secondly, how long does it take for labour to start after this sticky discharge, it is immediately or after some days or week Please answer urgently