Martina, maybe it was a little cough......that just sounded like a klunk. I recently had a little metal rod come out of my 1/4" foot and fall into my bobin area. Did I panic and scream? Well, yes....but, the "doctor" at the LQS took off the plate and tweezered out that little puppy. Long story short, the E.R. visit wasn't as painful as it could have been. Hope yours ends up as well.