AIDS was first reported in the United States in 1981 and has since become a major worldwide epidemic. AIDS is the most advanced stage of infection caused by HIV. The names HIV and AIDS can be confusing because both terms describe the same disease. But most people who are HIV positive do not have AIDS.
The hospital usually class 'active' labour when you are 3 cms dilated, so if you were 4 cms then you will most likely be admitted onto the ward. I was around 5, had the kid 9 hours later! When I went in the hospital they put me straight to a bed! My water never broke either, they had to break it.
Everyone is different. Some people dilate weeks before delivery.....some don't start dilating till labor has started! My girlfriend was 1cm dilated at 28 weeks and didn't deliver till 39 weeks. Also, 2nd 3rd 4th etc pregnancies tend to start to dilate earlier but still don't mean labor is eminent.