Dear JaneinMelbourne,
That's great news.
A couple of times I had an extra strap over the top of my head and down around my chin. As i felt an air bubble on top.
(When I pushed down on top I could hear air moving.)
I'm not sure what Chemo drugs you are receiving. Don't expect the worse, with side effects, it may not happen. You will probably at least have some more minor ones. I have been very lucky. It's OK to vent if you need to though.
Good luck with your continued use of the Cold Cap.
I was told not wash my hair too often.
And not to blow dry or straighten my hair, while using the Cold Cap.
Keep in touch.