They don't measure until 28 weeks I don't think. at its 'supposed ' to be a cm per week. so at 28 weeks it should be about 28 cm. They measure your hundal height not round - ness of bump. so don't start worrying. you lay flat and they measure from your pubic bone to the top of your uterus/where they can feel the baby ends. All bump sizes are different because of how baby is laying, amount of water, body type and shape etc. you can have one person that looks huge and one that looks tiny and both have the same measurement. 😊
I have no idea, wasn't measured at my 24 week appointment and have to wait another week until I see the midwife so I will find out then I suppose. Not sure how big I should be measuring by now? X