You're not providing enough information. First of all, how old are you? Second, how long were you guys together before he asked you to live together/have a baby?
His phone was probably broken. He's still talking to you and explained what happened.
I will do my best to reply with an educated, humble and honest answer. Ultimately, it is up to you whether you want to listen to my advice or ignore it completely. Sometimes, my advice may be wrong; occasionally, it will be right. Regardless, I want to do my best to give people answers they are seeking.