boyfriend changed his mind

i been with my boyfriend for almost 3 years now.. when we started dating , we used to talk about having kids together, and what they would look like and what sports would they play .. blah blah.. Now its going on 3 years.. he hasn't spoken about having kids anymore😞.. we haven't been texting like how we were when we started to go out... I just feel like he doesn't want kids with. me anymore.. I never been on birth control ever... But we do the pullout method a lot... Idk if i should bring it up again or keep quiet and never speak about kids again... what does this mean