Get haemorrhoids treatment from the best piles lady doctor in town. To know about the different types of treatments we offer, kindly visit our website http://www.ladypilesdoctorpune.com/. During pregnancy, the increased size of the uterus can exert pressure on the inferior vena cava, the vessel that receives blood from the lower limbs. The pressure obstructs the flow of blood back to the heart and causes the vessels below the uterus to dilate. Thus causing dilation of the delicate haemorrhoid cushion. If any pressure is there during the bowels, then one can feel pain and have blood in stools.