When do you find out gender?

Hello, I'm 10weeks 3days but will have an appointment next week when I will be 11weeks 6days. I'm hoping I can find out the gender that day. My insurance doesnt cover for the blood work to find out gender so I have to wait for sonogram. (I'm not paying $1,000 for it, I rather wait lol) When did you'll find out the gender through sonogram? I havent had any nausea or any pregnancy symptoms like I've been reading. Is that normal? I've only been sleepy.