The phrase "to call the doctor" means that someone needs to contact and ask for the doctor's help or assistance with a medical situation or problem. Full definition
You should also call your doctor if your child's symptoms are worsening, even if he was recently seen by the doctor. (verywellfamily.com)
You must call a doctor immediately if you see that your child is getting irritated by the reflux and has started losing weight because of it. (newkidscenter.com)
However, if you're experiencing any pain or vaginal bleeding while pregnant, please call your doctor right away. (verywellfamily.com)