Gender reveal fears 😫😓

I'm currently 14+5 weeks and the last appointment I've had about my baby was at my 12 week scan on the NHS. I booked a privet gender scan for when I'm 16+1 weeks on the 16th of August and decided to invite 8 family members as I was told I could bring this many.

However I'm scared to death we will be all sat there waiting and something will be wrong and I will have to deal with it in front of my nearest and dearest. My next appointment with my midwife isn't until the 20th of August 4 days after my scan I think I'm nervous because I haven't seen anyone about my baby since to make sure He or She is okay.... has anyone else got the same fears or experienced something similar? Xx