Girls good evening) tomorrow is the 39th week, I already want to meet …

Girls good evening) tomorrow is the 39th week, I already want to meet my little one? Lately, my belly has been getting quieter more often, there's a pull in my lower abdomen.. Please explain to me how I will know that it's the beginning of that and I need to go to the hospital, I just don't even have any idea what real contractions are, the doctor said my belly hurts, call an ambulance, he hurts when the belly gets quiet ? Waiting for your answers, thank you all in advance ?