I am 25 weeks pregnant and didn't find out the sex of the baby at the scan. I have been to the midwife today and she said, after she had found out I didn't know the sex, that she thought by the speed of the heartbeat it was possibly a girl. I am feeling quite cross by this as she knew I hadn't found out. I already have 2ds, so I think she thought this was what I wanted to hear. Can you tell by this?