Over the past couple of months my seven month old has been doing this strange thing in her sleep where she snorts really fast as if she has been crying and winces. She does this for a couple of minutes then suddenly wakes up In distress. Sometimes she really is hysterical and its horrible, eventually a feed seems to calm her down. When I hold her and comfort her I can feel her little body jump as she sobs. Then she seems ok again. It's not all the time, maybe once or twice a week, has anyone else had this at all?