This is my first pregnancy and I have been bleeding constantly - similar to a period for around 7 weeks (the first week I thought was my period) so I had an early pregnancy scan and they have told me that I am 7 weeks pregnant. The sonographer told me that the bleeding is due to some bruising on my womb but apparently is harmless for now (!) On the scan the baby measures at 4.5 centimetres which, after googling, sounds more like a 10 week pregnancy because online it says at 7 weeks it would be more like 1cm. Do they usually calculate from your last period? Because I told them it was at the end of July which I thought it was but in hindsight I think this could have been the bleeding due to the womb bruising. Could I be further along due to the size of the baby? Thanks so much x