Pregnancy was never meant to be easy was it!?
First you go through the initial 12 or so weeks where you are dead set scared of m/c then you get to 12 weeks and have to decide whether to scare youself senseless by having the NT scan and b/t to see if your precious baby is all ok.
The only reason I wanted to have a 12 week scan was so I can see junior again. We ended up doing the scan first and had no intention of the b/t. However the nuchal fold was something like 3mm. The doc scared us into having the b/t done and I tell you it was a very tense wait for the results. My bloods were good and here we still are.
It is a personal choice and up to every couple about deciding what to do. When the baby is born it will all be worth it.