boy or girl???

so here's a little bit of a back story. I know genetics really has nothing to do with gender buuut, on my fiances side of the family ever generation only has 1 of one he set and the rest will all be the opposite. ex: his grand parents had 1 boy 3 girls and out of their kids there has been 1 girl and the rest boys. and there has already been 1 girl and the rest boys for this generation of babies so everyone thinks I'm having a boy. On the other hand on both my mom and dad's side there has only been 1 boy in each generation and the rest have been girls. 2 of my older cousins (one on each side) have both already had boys. so if gender were to be based off of genetics I would be having a girl lol I know no one can really tell but I think its kind of fun to see what people think so??