Help, yellow spots on Phal leaves
 

In doing a look-over my Phal today, I noticed yellow spots on the lowest leaves. Is this something to worry over? This plant (to me) seems to be healthy, roots look good and she's currently still forming an ever-growing new spike. Thanks for any help :).

Two more pictures.

It might have recently been bumped or scratched. I wouldn't worry unless they begin spreading.

I'll keep an eye on it ... so far, it's just the lowest leaves on each side. I know it's natural for the bottom leaves to yellow and fall off which they're currently doing. It's just the spots which are worrying to me. But as of right now, they're pretty localized to just those areas.