I WANT A BABY!'

So yeah, i know about all the effort it takes and how much you give up for a baby. I'm so broody and the feeling isnt shifting. I just want a mini us that i can love forever. Yeah, i'm 18 in a two year relationship and i adore him so much he's my world. I am full time working and he's in his 3rd year of college and works part-time. I have been broody since about June and i've spoke to him and obviously he isn't a 100% on it but he does like the thought of having a mini us! Before everyone comments, 'get a puppy'- we have one and we love looking after her. She's our baby🙈❤️ we have our deposit for a flat and hopefully moving out in the next 2-3 weeks. Is it wrong i'm feeling this way?? I get pains in my belly when i think about it because i want it that badly!!