Family issue

My husband and I keep fighting to the point i want to divorce.. My husband meeting his ex without knowing he do that to me... They just friendly chat but for me as feed back I can't let my husband go alone and nvr tell me.. After 1 ex then another meet ex. For me it's a cheating bcos i dont know and 1 of their convo he say she makes him happy.. I feel hurt that he must keep that to me text call he delete.. And he say im childish and crazy.. I have 19 months baby and pregnant.. What to do I feel emotionally drain and physically tired.. I'm not in good terms in his family, friends and relatives.. His mother keep saying calling me as maid and that's hurt.