Not sure how to feel

My Boyfriend has other kids besides The one we have on the way. He has family in another city that I haven’t got a chance to meet yet so when he sent a text out that he is having another baby some assumed it was by his other kids mother and he didn’t correct them but his uncle did correct them ... how would that make you feel if he didn’t correct them because I’m feeling kinda unwanted and like he would of rather had this baby with his other kids mother I don’t know how to control this feeling I feel hurt but am I wrong