Babies?

The father of my baby and I are not together anymore but him and I are still pretty close ( not intimately, because I refuse cuz the situation), today we were talking about his other kids (ages 7 & 8) and he is all excited for our baby ( not due til March) and all of a sudden said "then we can have another one right after" and I looked at him like uhmm no I have things to finish first like school. I'm not having another baby til I'm done with school so when our kids like 2/3 then we will see.. He said he understood but he looked kind of upset.. 😒  
Him and I aren't together because of drama with his first bm.. And it's nuts cuz of everything going on.. We were together 4 months (she wasn't even in the picture and was seeing someone else, but found out about the pregnancy and then started a whole mess) but aren't now and this baby isn't even here yet and he's talking about another one.. But we aren't together... Is this weird? Is this his way of telling me something Or am I over reacting lol I'm so confused..