Need Advice! Very Long but please help!

Karlena • Pregnant with baby #3!! Due Sept. 16, 2015❤️
Background Story: 
This past Saturday, my husband and I were on our way to my SIL's baby shower for her first baby. My husband and I got into a fight. I told him that I would rather walk than be in the car listening to him yell at me. He pulled over and I got out. He pulled off and didnt come back. Mind you I was stranded on the side of the highway about 65 miles away from home and I am 5 months pregnant. I called my SIL and just quickly leg her know that me and her brother got into an argument and he left me on the side of the highway and if she could send someone really quick to pick me up so I could go to the baby shower. She puts my MIL on the phone. I explain the situation to her and she says that she will call my husband and speak to him and try to get him to pick me back up. An hour later I call my SIL again and she picks up laughing and says "oh he is here, he is dropping off my gifts" and then puts him on the phone. I ended up panicking and throwing up, and I started to have contractions. I was in severe pain. I called 911. These fabulous people rescued me and took me to the hospital immediately and took care of me. The police called my husband directly. He takes me home after I am released from the hospital. 
Since that day I have not spoken one word to my husband because I honestly have nothing to say. How could you leave your pregnant wife on the side of the highway and go to your sisters baby shower and not even think twice about that I could get hurt, be taken and killed, etc...? Also I was close to his family. Yes we had our arguments in the past but we got much closer and I would talk to his sisters like as if they were my own blood and speak to them every day. And I called them to ask for help, to ask for a ride since my family lived over an hour and a half away and my in-laws were 10 minutes away. 
I feel betrayed. Everytime I think of what happened I start crying because the sting of betrayal hurts so badly. My inlaws did not even call to check on me or text me or anything. My SIL only sent a group text to my husband and I thanking us for all the gifts we bought her and that she wishes we could have been there. 
Is it wrong that I feel that I do not respect or trust my in-laws anymore and that I will avoid them at all costs and ignore any communication that comes from them? I am ignoring my husband and looking to separate the marriage as of now. But I felt even IF me and my husband worked things out, I would NEVER speak to my in-laws again and they could never see my children or be welcome to my house ever. I do not trust them. Even when his sister has a baby I will not send a card or a text or anything and I will and my children will not be in attendance of any of the in-laws many events. I am sincerely done with my husband and his family. 
What are your thoughts? Any advice? Thank you so much for your help in advance❤️❤️❤️