*hugs* hun! FWIW we had major dramas at my first scan with DD1 - my mum wanted to come in and just assumed that only 1 person would be allowed, so she actually had the gall to take a few digs at DH in the clinic waiting room, suggesting that he should just stay out of it because *she* was the grandparent... in her defense, DH and I had only been a couple for 4 weeks when I fell pg so nobody was really convinced he was going to stick around, I think mum was just trying to establish her authority over him in the relationship stakes (she's always been a little narcissistic like that, everyone must defer to her and give her whatever she wants or there's hell to pay). Anyway, long story short, I just asked the u/s tech if we could grab an extra chair and it was all good, both mum and DH got to see our little parasite wriggling away and waving arm and leg buds around.

But yeah, if you don't feel comfortable having her at the 20wk scan, let her know she's welcome to come to a later one - tell her it'll be better that way because she'll be able to see more detail as bub grows bigger Your pregnancy, your rules... but try your best not to leave your mum out, she is probably trying to make a really good effort this time because she probably feels guilty about not having spent more time with you while you were pregnant with Hayley. xx