Gender reveal???

So I had my ultrasound a couple days ago and we weren't going to find out gender. But she let me take a video since my husband wasn't allowed to come to the appointment with me. As I watched it back later I noticed she scanned over the bum area and my curiosity got the best of me. I slowly scanned through the video and got these shots of what I think is little girl parts. I am so excited but am not saying a word to my husband as he really wants a surprise and he is sure it's another boy lol. What do you guys think? Who knows I could be wrong. I'm not a professional after all. I just know what my boy looked like when we found out with him and there was a very obvious sack and penis lol.

This was at 21 weeks and 2 days.