What would you do?

My BF and I had only been dating for 3 months when I found out I was pregnant. We were both understandably nervous but he seemed to be more excited about it. He went with me for the first appt at 9Weeks and found out I miscarried (baby had no heartbeat) at 8 weeks. We were both upset, considering we had started to plan and figure out the rest of the puzzle. I got on birth control after and that seemed to upset my BF. We’ve had some big bumps in the relationship and have kept things slow. We both have kids, he has two little girls and me one boy, but our kids have never met and we’ve never met each other’s kids or family. Now we’re going on 7 months together and he keeps talking about how this would be the best time for us to start (he’s got a chaotic career and I know I want more babies) but I’m just worried because we haven’t been around each other’s families or friends that we haven’t seen the overall picture. Of course it looks easy right now but it’s because we don’t live together and our schedules don’t overlap. It’s fun, it’s easy. He’s got two ex’s and I’ve only heard his side of things with both Baby mamas and I don’t know how those relationships will effect ours. It’s a lot. I want to have more babies and I do want to have them with him but should we wait till we’ve meshed our lives together a little more? I don’t know, maybe I’m over thinking this but who you have kids with is a big deal and I want to make sure that my son and this baby would be in the best possible situation. Advice?