Nothing to worry about at all.
The longest mine (Velvia 50, 100F or Provia 100F) has been in-camera is 4 months over Winter and into Spring. Every image counts; it's not wasted.

Fortunately for us Downunder, pro-dealers happily stock heaps of pro-level film (E6 in multi-formats is especially well represented) alongside the latest and worst of digital. Keeps the two camps happy and the store in the good books!