Constantly quivering lip

[cortisolqueen]

For the last week my bottom lip has started to quiver. Not all the time, but regularly.

Any idea if I should be worried/what could be causing it?

I don't know but I've got a quivering eyelid. Not constant but numerous times a day, sometimes several in the space of a minute. I've put it down to stress.
No one else has noticed it and I've tried looking in a mirror but the darn thing won't do it when I'm looking!

You should contact your GP as it's not normal for you and you should get it checked out.