Feeling sad...

On our wat back from a roadtrip my boyfriend told me that he seems im "obsessed" with this whole baby thing because i bring it up all the time in different ways...now i feel like i cant talk to him about it at all. I asked if it bothers him and he said it kind of does...i cant not think about it, i wish i didnt so i didnt feel like this... Any advice?? I need support...i dont know how to deal with this on my own...