hi muimuisam
it is a regular pain. the pain starts fr the bottom of your tummy then extend to the upper, and then it may stop x a while. at first it may say, 1/2 hr then 20mins then 10mins etc.... the frequency & the severity of the pain will increase gradually. finally, it may lack of the rest period until the bb comes out. it really makes you feel very very pain, but you must able to bear it as it's the inborn ability of a mother!