Rainbow baby different sex..

Has anyone gotten pregnant with a rainbow baby of the opposite sex of the baby you lost ? Im nervous that if i do fall pregnant ill have a boy.. my so already has a boy and since i really wanted a girl and was having a girl & was already soo set on having my little girl and everything pink, it would just be different.. not that i would really care, as long as i could carry my baby healthily to full term.. i just think about it alot...