my 4/5 month old Jack Russell Terrier bitch ( Ginger ) seems to be entering her season. is this to early?
and we also have a 9 yr old Cocker Spaniel, which is kind of worrying. We don't know if this is her 1st season, or if she is bleeding, as she had a nasty fall down the stairs on Thursday.
Can somebody help?

We can't tell from reading your post, I would take her to the vet and tell them she has fallen down stairs even if the bleeding is her season she could have damaged the growing plates in her limbs. Would not wait till Monday either, do her female parts look as if she is in season and is the other dog a male?

Your post is very confusing. Suggest you join and give us the full story.