Genetic testing??

So I'm just curious... I'm pregnant with baby #3, guessing about 9 weeks 3 days. We have two handsome boys already and I'm extremely anxious to find out what our lil peanut is! I've been seeing so many ladies on here finding out the sex early, like 12-14 weeks through a blood test. Just curious how accurate it is (I would assume very but seen some say theirs was wrong)? And also do you have to find out over the phone? I was really looking forward to doing gender reveal with family and would love to find out all together since this is our 3rd. Please ladies share your stories with me. I go to the dr for my first appointment on Nov 4th thinking I'll be close to 11 weeks and am really considering asking my doctor about it. Thanks in advance ☺️