
Hi,
Moulting does not mean an animal is coming into season! Males moult too! Bitches of coated breeds often lose their coat
after a season, not before!
However she is of an age to expect her first season any time. Have you noticed her vulva area swelling at all (can be hard to tell with all the coat)? From now on, every morning press a clean white tissue against her vulva, before she goes out for her morning wee, and the first day you see a sign of pink is the first day of her season. From then on you don't leave her unattended out of doors - not even in your own garden - for at least 21 days. If you take her off your property it's best not to let her off the lead.
Healthwise you should notice no difference at all. Behaviour-wise, she might first become a bit moody and clingy, then halfway through, at her most fertile time (about 11 days into the season) she may become independent, bolshy and flirty.