I am 20 week pregnant with twins. Baby a get so low at times that it hurts.  Right now after her sitting low for hours at work my pelvis area feels like there is a redicu las amount of pressure on it so much so my hips and upper thigh area hurt and not to over share or be disturbing but my vag is throbbing!!  Is this normal?  Please don't get me wrong I'm NOT feeling contraction at all!  This is my third successful pregnancy and I don't remember either of my other two kids being this low this early but there was only one then!!!