Feeling very confused. Had scan at 8 weeks, 2 days ago. Dr said I've mucked up my dates and put me at 5 and half weeks as embryo is 3mm. I am 100% sure I am 8 weeks gestational age and haven't mucked up my dates. Dr didn't say much else and when I received my pictures later I noticed the heart rate was 86 bpm. Everything I've read says that this is really low but why wasn't it mentioned during my scan? My brain has assumed the worse but is still afew days away from a visit with my gp. Has anyone else had such a low heart rate?