Has your doctor scheduled your gender check ultrasound?

I have no idea when my next ultrasound is!! My last one was 8 weeks 2 days and I am currently 11 weeks. I have an appointment on January 28th (at 12 weeks 4 days) for blood work and an "educational" meeting with my doctor. But I am really hoping to schedule to find out what we're having!

We are really hoping to throw a "gender reveal" party at my mother in law's and then have it be a surprise party for her 50th birthday which is march 20th! And then we'll do an actual reveal at the end too. I'll be 19 weeks and 6 days on the day of the party (the day before her birthday). But I'm worried they'll schedule me for 20 weeks and we won't be able to do this at all!

Have any of you scheduled and for when during your pregnancy?

Thanks!!