Crossed legs

I was wondering if I could get some help from you mamas. I was in the hospital yesterday (pain reasons) and when they did the fetal Doppler the baby kicked it lol and a hour later when they did the ultrasound the baby crossed his/her legs. I couldn't do anything but laugh because I'm like omg my baby is so mean & stubborn. Then it dawned on me what of this happens next week when we go to find out the gender? Is there anything I can do before the ultrasound? Any suggestions/opinions are welcome. I would hate to have to wait any longer to know what baby is. Thank ladies!