What Should I Do

I'm 20 weeks and 4 days preggy now. Gusto ko na malaman yung gender ng baby ko before Christmas. Super maganda gift to for my family and friends. Kaso sabi ng iba sakin 6 months na daw ako magpacheck kasi hindi pa daw makikita yun. Or sa January na daw. First time mom kasi ako kaya excited ako. ? Should I postpone my plan?