Baby fever

My son is only 6 weeks old and I'm already having baby fever. I got my birth control but I haven't used it because I sort of want another baby already but my husband and I are living with my mother since we can't get a place to live on our own right now.

*****EDIT

We are waiting. I don't even really want another baby yet or again. It's just seeing baby girls makes me want a girl. Also I'm not burdening my mother, we pay most of the bills and my mother wants me to have another one. But like I said I am not planning on having another so soon.