Gender?

Ashley • Expecting our second baby!! November 8
So I have went 2 times to try to find out what I'm having and each time my baby was turned and wouldn't let us see and the doctor told us he wouldn't try again to tell us what we were having.so my question is this how would I go about shopping to get this for my baby? As of rite now I only have a crib, playpin and a swing that was given to us. I am a first time mom so it's kinda bothering me not being able to shop for my baby like I would want