Missed NT scan

Hey guys, I thought I will miss my nt scan because of insurance.. but insurance is fixed but missed the time period because of mistake by my obgyn nurses.. am 14 weeks today.. I don't think they can schedule for another week.. so I will be out of scan window.. is it alright to miss this downsyndrome screening scan? Am worried that I missed important and did bad to my baby...not my fault still..did u all get it? My next appointment is on September 16th only.. pls comment...