I am 30 weeks today and over the past 24-48 hours my baby's movements have changed a bit. I was getting absolutely pummelled constantly, but now, although the movements are probably just as regular they are much softer/gentler. Does anyone know if this is something I should worry about? I'm just concerned because the kicks were so strong before and now they're only noticeable if I am still really. I should call the midwife shouldn't I?