You don't. You NEED to see a doctor.
You don't know when they are a baby unless the baby is taken to the doctor for an examination. Without a doctor's visit, you would just compare the child to others in school as they get older and in the higher grade levels.
If your doctor gave you a due date, you should know if your baby is late, as well as your doctor.
the doctor decides wheather or not the parent needs to know whats going on
you don't know you're going to get a baby
You go to your doctor and get an ultrasound.
Short of having had some kind of obviously debilitating accident that would bar one from reproducing, one cannot know. Not without a doctor examining the person.
You know when you have a baby girl your stomach is smaller than when you have a boy. Also its possible to know by the first month by going to the doctor, but the answer might not be accurate.
You wait until the baby's born. That's the only way.
Ask the doctor.
Ask your doctor
Ask the doctor.
Babies can't have bulimia. However, babies can have vomiting. You should have a doctor examine the baby and give the doctor information about when the baby usually vomits.