Hope all goes well at the scan orange and you get a lovely sonographer.
Roofio first time around I never felt any braxton hicks at all - the very first twinges I felt were the start of labour. Not sure if they are generally more common in subsequent pregnancies, but this time I'm having heaps. My womb goes all tight and hard for a few seconds - sort of crampy but not really painful.
They aren't helping my sex life one bit - without fail getting aroused triggers them off and, for me, they're an instant passion killer 