Gender from ultrasound question?

Nicole • momma to an angel & a baby boy 👼🏻💙

When were you able to 100% sure to see the gender? I know a few ladies were able to tell if it’s a boy as early as 13 weeks. I’m trying to decide if I should make an appointment at 15 or 16 weeks. My bf gets paid the day I turn 15 weeks, and we’re saving money so it’s kind of hard to keep enough money for a private ultrasound and waiting a whole week instead of just a few days, if that makes sense. I’m just wondering when other mommas think i should get the ultrasound. Anything helps. ☺️