hybrid, same thing happened with my wee granddaughter.
A year old, persistent cough, being sick and screaming, but my DIL had been dismissed as a new mum, who was overreacting.
On one of our childminding days, she was very ill, but I couldn't get an appointment for her, so marched up to the health centre, not my own, so knew no-one and asked to see someone.
The receptionist took one look and got a very shirty GP, who was most annoyed at me for walking in off the street..
After examining her he agreed that she was very unwell and I had been right to insist. Once I explained about the family history and my concern, he totally changed his attitude and said she was too young to diagnose, but he too was sure she was asthmatic. My youngest son was diagnosed as a toddler.
She was referred right away to the children's hospital, where she has been receiving excellent care ever since.
I am a bit of a wimp about some things, but when it comes to my family I will fight tooth and nail for them.