I was certain at my 12 week I was having a girl cuz she had her legs pretty spread and sure enough I was right. It was confirmed at 17+6. But symptoms are different for everyone so its hard to go off that.
My guess is ur pregnant lol... When i was pregnant with my daughter everyone convinced me i was having a boy based on my symptoms. I had acne with my girl but i was also very sick so i'm guessing boy
I had my ultrasound done @12weeks 5days but my baby had his/her legs crossed so we couldn't tell what the gender was.
You more than likely won't find out the sex, as the sex organs are just developing at 12 weeks! So don't get your hopes up too much!
I do guess boy though, only because I had acne with my boys. And my face is clear with my girl I'm carrying now!