Anyone pregnant but not married & in a committed relationship?

Sierra • Hi! My name is Sierra. & I`m a momma of a two year old girl (:
I'm having a hard time like really bad my relationship is beginning to suffer.  
We're both madly in love.  I'm 16 weeks pregnant and as I did before I want to be married.  My OH however also does but just isn't ready & says he feels pressured from everyone including me.  This issue was always fine before cause I planned on waiting and continuing school. 
However now, I don't want to spend a second raising this child without him. I want us to raise our daughter together! 
He wants me to move in with him, but I'm not comfortable with it without being married. I want to get married and do things the right way. I want to be a true family. Not the girl who lives with her boyfriend that is pregnant. I'm really not sure what to do. In this situation either my boyfriend will have to propose or I will have to move in with him. I really don't know what to do! Are there success stories of couples who moved in pregnant and unmarried? Opinions? 
Please be nice I know you girls can get kind of rough. 
A little background: I'm 22. In my junior year of college. My BF who is 21, is an electrician working in an apprenticeship under a union. We have been together now for 3.5 years.