Everything!! I had a fairly easy time with number one other than having her at 34 weeks. Second time was much harder, I had morning sickness all the way through, sciatica and an unstable pelvis, I also went into early labour at 35 weeks and spent two weeks on the couch. If it had been my first I don't think I would have gone for a second. This time I have barely felt pregnant just a little bit tired and now I feel movement to remind me. My bump has been small for all three, I felt DD2 move early at about 14 weeks but with 1 and 3 the placenta has been on the front wall.