I need Help! A metal wire has gone loose in my mouth and I don't know what to do...

Basically I've had invisalign treatment and coming to the end and my orthodontics put a wire behind my top teeth to keep it in place on Thursday and now today it's coming off when it's not supposed to...

Phoned the practice but they're closed on Saturday and automated voice message said to phone 111 ig ure in extreme pain! :(

Any advice what to do?

My next appointment is not till next Thursday