How can i be ok with having a baby boy? not what it sounds like...?

my husband and i are expecting (im 7 weeks) and very excited. i am just concerned about the gender thing. let me explain before you judge. i am from a family of all girls, i have 3 sisters no brothers i have 30 some girl cousins and only 2 boy cousins, whom i have hardly ever been around. growing up my household was all about painting nails, pajama parties, barbie dolls, it was girly as could be. my husband comes from a similar background, he has two sisters, no boy cousins all girls, and they were never into sports, cars, trains, any of that. i know nothing about boys, i know if i have a girl i will instantly know how to handle cattiness, pms, boy issues, all that, but i dont know how to do sports, legos, or any of that. one of my girlfreinds talks about her trips to the ER with her two boys because they jumped out of the tree house or sucker punched each other. she talks about her boys farting and burping on each other, wrestling, all that. i just am afraid i wont be able to be any fun with my son. i know i will LOVE my son just as much as a daughter, no doubt, but i wanna be a fun mom. because im afraid of that i prefer a daughter. its what i know. how can i prepare?