mother in law&Husband getting on my nerves!!!

So I found out at 14weeks&5days I was having another boy. My 3rd Boy. I was kind of bummed because I wanted a girl but I got over it quick and now I'm excited. I got another ultrasound at 17 weeks at the emergency room and again I saw his peepee. So I know for sure it's a boy. I have my anatomy scan on Tuesday 17 weeks&5days and they think it's still could be a girl. So I want to buy boy clothes and they keep saying Oh stop looking at boy clothes it can still be a girl. It's just getting annoying. I think I know what a Penis looks like. They weren't there for neither of the ultrasounds so maybe that's why. I guess we will see on Tuesday. Anyone else on the same boat?