The [boring] life of a SAHM

what has the chinese gender chart said for you? they always say boy for me. i have this fear that i'll only have boys, and no girls. my sister has 3 boys and 1 girl. DH already has a son. I was reading something that the older a man is, he's more likely to have sons, something about the male sperm, i don't know. he's 10 years older than me, so i'm worried! we only want two...so if this one is a boy, i'll be stressing out that the next is a girl! and if it's not...i'm screwed. :( he definitely won't want to keep trying. it took a lot of convincing pre-wedding for us to decide on 2! he only wanted 1 more originally.