12 weeks blood test to find out sex

Right now I’m having a hard time deciding whether or not to find out my baby’s gender with that 12 week blood test. They do that blood test with every pregnancy, and each time I opted out of finding out until my ultrasound. This time I am just so curious to see what we are having I really want to see what the blood test comes back, but also am worried I will regret it because it will take the fun out of the ultrasound. I have also looked into that kit you can order online not those fake ones that just give you a fake answer the real ones that you send in, and they analyze what you’re having it’s 99% accurate. Can I get everyone’s opinions?