Thank you for the advice!! I've got a bit more information now, but I guess I'll wait until I see the FS and see what she says (which is what these appointments are for, right?

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If this IUI doesn't work, a break will be nice, so I'll just wait until our appointment, and I'm sure work will be fine if I change my holidays at the last minute. They know what I'm doing, so they know to expect days off etc at short notice.
Briggsy'sgirl - Thanks heaps, I'm hoping I won't need to think about IVF either, but I hate not knowing what could happen, and not being able to plan ahead.