Unsure what to do

So my first ultrasound is scheduled for 10 weeks. At 13 weeks I have the option to do genetic testing which includes blood work and another ultrasound. 
My doctor kind of swayed me to do the test because he said why not, you have the chance to find out if something is wrong ahead of time even tho the chance is 2%. Anyways he left it up to us to decide.  After this I won't have another til 20 weeks so it's not like I'm having a TON of u/s but I'm also a little worried that I may do 2 so close together at 10 and 13 weeks.  
What would you do or what did you do? I'm healthy and have no background of genetic abnormalities yet I still felt my doctor thought I should do it.