Small leak - stain on ceiling
We woke up to a stain in the ceiling about 4 inches in diameter on Tuesday morning. The stain is directly below the en-suite shower. Plumber came in today and checked the bathtub drain. He also inspected the shower drain along with all the sealing. He said they were all good. He suspects water may have leaked out of the tub or shower, but that didn’t happen.
The house is 3 years old and the shower and tub have been heavily used in those 3 years.
What would you do?