pregnancy fetish??

my boyfriend has a pregnancy (fetish?) i guess. like he is obsessed with my stomach which i'm not pregnant and not fat i'm just kind of curvy but he is always touching it and saying how much he loves my stomach and always talks about getting married and getting me pregnant. it sounds crazy now that i'm typing it out but i don't know. i just need to know if this is like weird or normal. overall he's just obsessed with my stomach like i don't know if its necessarily a pregnancy fetish as much as it is just a stomach fetish. maybe even just curvier girls? but pregnancy is the extreme of that obviously and that's what he always talks about. i just don't know what to do about it.