is getting the NT scan worth it?

El
Originally I was all on board with getting the NT scan and have already done the first blood test (through the arm). Then I heard people telling me that the NT scan gave them inaccurate results and they worried their entire pregnancy only to find that their baby ended up being fine and normal. 
Are you planning to do or have you already done the Nuchal translucency ultrasound scan? 
How was your experience?