I think he is gonna leave me..

We got into another fight yesterday.. he hasnt talked to me since. He left at 4, came home after 9, then left again and didnt come home until almost midnight, and then he slept on the couch. I messed up. I know its my fault, i have tried apologizing to him in person, and text, and he wont even open my messages, let alone speak to me. Didnt even get a hug and kiss when he left for work today, and he didnt ask me to come and bring him breakfast on break like we normally do.... during the fight he said he couldnt take it anymore. Im scared that when i get home today we will have another fight, or that he will be packing his things.. we have a baby on the way, but we have been fighting so much lately that i think she is the only reason he has stayed with me. I try and fix everything that i do wrong, but i just end up messing things up even more... i dont know what to do or what to say..