Problems

I have been with my dude for four months and I just found out we where expecting... These four months feel like a waste of time....we never get alone he always getting mad about petty stuff and always looking for stuff to get mad about....he says he doesn't trust me and I'm a problem...I haven't giving him a reason not to trust me and I haven't done anything wrong....I have been there for him whenever he needed me but I don't get they same thing back....I been real emotional and it like he don't care he doesn't show me any type of affection but get mad if I don't cater to his needs....but he wants me to bring this baby in the world of chaos between the two of us....what should I do?