Tea, don't worry about me, Im fine. 
Im kind of undecided on this. I signed up for the bloods because DP was quite keen, never thinking anything would show up!
As it turned out, when the sonographer scanned me and found the abnormal NF measurement and I said that I wished I hadn't consented to testing now, she told me that they measure the neck anyway, and are obliged to tell people of a problem whether they request bloods or not. So if there is an anomaly on the scan you will get the worry anyway. IYSWIM.
I was expecting results for the blood around 1 in 100 or something high but not scary high, and wouldn't have gone for amnio. When the midwife said 1 in 5 and an abnormality became a definite possibility I just needed to know. I can't bear surprises!
Being where I am now, and feeling like I do, I would say that Im grieving for my dream baby, and coming to terms with reality. I hope that doesn't sound horrible.
In a way, although Ive got the next 5 months to go knowing whats ahead before I get my baby, I will hopefully have it well and truly together by then. I imagine that finding out at birth, being exhausted, and hormonal, I would have to go through this process afterwards, on top of recovery, bonding, and getting my head round a new born baby.
And knowing doesn't change anything for me, I was always of the opinion that I would proceed anyway.
The other thing Im glad of is knowing that the problem is just Downs.
A extremely life limiting problem like Edwards Syndrome would be the only situation in which I would consider termination. I can cope with a lot, but having a child and knowing it will die and there is nothing I could do would finish me.
Anyway, Im not sure that this helps you, but its my take on things. x