I think you hear that a fair bit on Rownd a Rownd also.
But your question made me start thinking, what is the best Welsh alternative for "just" in that situation?
"newydd" only applies in the past, doesn't it? ("I have just done something").
"dim ond" doesn't really sound right here (does it?).
Would it be "ar fin"? (But I'm thinking this might sound a bit stilted in this sort of sentence).
(Gweiadur.com has given me "bron â" as an alternative to "ar fin" (which it translates as "on the verge of").