Hi All, hoping for some similar experiences to reassure me whilst I wait for a consultant call next week. We were fairly sure I was 12 weeks to the day at the dating scan (I'd been tracking ovulation for a year although not the two months prior to conceiving and my cycle only varied by a day. Also my husband weekly commutes so we know when we what dates we could have conceived) but they dated the twins at 13wk3days. That would have meant a very short cycle and ovulating waaay sooner than I had in the past year. At the 16 weeks scan the twins are measuring small (having been measuring large at 12 weeks). My instinct is there is something shifty about the dates as we've always been unsure of that but is that realistic or am I just comforting myself? Obviously restricted growth is an issue especially for placenta sharing twins so I'm worried its something more serious :/ My son was 80th percentile and I have no risk factors for them being small except it being twins but that apparently shouldn't impact size until later. If we go by the original EDD they'd be slap bang in average percentile. Everything else looked good on the scans and they were both kicking away so had lots of energy. Has anyone experienced anything simliar? Or ever had their EDD changed back? Is that a thing? Thanks in advance for any words of wisdom or comfort whilst I get through the weekend waiting for the consultant appointment.