Eeeek. Glad you and the baby are fine. Re. 4 and 3, mine was phoning 999 because my then 2 year-old had had a fit and turned blue and having paramedics burst through the front door and instantly administer Calpol. Febrile convulsion. He had a cold. I let him get too hot. And then they took us to the hospital for checks because the NHS is brilliant, and told me not to feel too much like an idiot. As the paediatrician said at the time "well I'd always call an ambulance. We don't take chances."