Getting serious.

I've been with my man for almost two years now he is 26 and I'm 22. He, my son, and myself live together and he has lived with my son and I for a year now. He is perfect, and I wanna marry him and have his babies. I've brought this up to him before and he does say he wants all the same things just in the future. I don't want to be bugging him about it either in fear of pushing him away. We have unprotected sex and he finishes in me but I do have the implant as birth control. Sometimes I wish I would get pregnant, but worried things could be ruined if he isn't ready. Any advice or words of wisdom ladies?