My partner have a chil with othet woman when we broke up,and now I gave birth in our first child.. her mother when saying about my baby she always mention my partner other child and it feels me anoying and I can't control myself but still I get hurt when I hear that child's name.. I don't what to do my partner when his mother mention this child he doesn't care that he always change the topic and seems not be care but I doubt it.. it really hard to trust him again but he always say hr trying his best but when I see him and hearing his child name I don't understand my feeling but really want to go far away from but I can't because of my child.. pleasr help me.I want my child to have a happy family byt can't stop this feeling

Please help me..