I have just been for my 24 wk scan of my dcda twins. All was well apart from they are concerned that baby a's abdomen measurements are smaller than last time. Her waist measured at 70% on the scale at the 20wk scan and now has dropped to measuring at 40%. They are going to rescan in 2 weeks time but im left wondering if theres anything i should be panicking about? Or does this happen often with dcda twins? Im an over thinker at the best of times so im trying not to get too worked up