Need opinions!

My boyfriend and I have been together for a year and a half. We just had our baby 2 months ago. We have always talked about marriage and have made it known to each other that we want to marry each other. My bf has talked about proposing but never has done it. He also is the biggest procrastinator I’ve ever met! He sometimes calls me his fiancé to some people and sometimes jokes about us being married. He also wears a ring my father gave him and to him it symbolizes our marriage even though we’re not married🙄 Anyways when we had our baby 2 months ago, we were in the car going home from the hospital and he hands me a ring and says (see if this fits you.) I tried it on and it didn’t fit because I was still swollen from pregnancy so I handed it back and said it didn’t fit. And that is all that was said about the ring. He left it in the car and it’s just been sitting there. Fast forward to today he asks me why I haven’t worn the ring that he gave me. I told him he didn’t give me a ring. (Which technically he didn’t)He said he did and that it’s been sitting in the car. What I don’t get is why he didn’t propose with it and why does he expect me to wear a ring that he just handed me with no words said about it. Like does he not expect to propose and just hand me a ring and say we’re married?? I just don’t understand.He has also been previously engaged to his ex before me and he proposed to her at a metallica concert. I just feel he put no thought into my feelings and no thought or effort into proposing. We’ve also have talked about the kind of rings we wanted which were in the $300 range and the ring he gave me was a ring that looks nothing like the rings we’ve talked about. I think he also got it from his grandmothers collection of rings. I really don’t like the ring and not because it looks cheap or he didn’t pay for it. I don’t like it because it’s not my style at all and I feel he didn’t put any effort in looking for a ring that I would actually like. I feel he just picked any ring he could get from his grandmother and now we’re automatically married with no effort no consideration or anything put into it. I just would like to know how you would feel if you were in my same situation.