So sad. ?

I'm 21 and I've been with my boyfriend for almost 3 years. I know he's the love of my life. Anyways, I want a baby so bad it hurts. I feel so empty all the time. I see all my friends and people I went to school with having babies or getting married and I feel like my life is at a stand still. We both have good jobs and could easily raise a child. I just want to be a mommy so badly. My boyfriend is 22 and he isn't sure yet. Or he acts like it's not something he even wants to discuss and I'm so heart broken.